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Journal articles on the topic 'Antiferromagnetism'

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Author: Grafiati

Published: 4 June 2021

Last updated: 30 July 2024

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1

Zhou, Wenda, Mingyue Chen, Cailei Yuan, He Huang, Jingyan Zhang, Yanfei Wu, Xinqi Zheng, et al. "Antiferromagnetic Phase Induced by Nitrogen Doping in 2D Cr2S3." Materials 15, no. 5 (February 24, 2022): 1716. http://dx.doi.org/10.3390/ma15051716.

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Exploration for the new members of air-stable 2D antiferromagnetic magnets to widen the magnetic families has drawn great attention due to its potential applications in spintronic devices. In addition to seeking the intrinsic antiferromagnets, externally introducing antiferromagnetic ordering in existing 2D materials, such as structural regulation and phase engineering, may be a promising way to modulate antiferromagnetism in the 2D limit. In this work, the in situ nitrogen doping growth of ultrathin 2D Cr2S3 nanoflakes has been achieved. Antiferromagnetic ordering in 2D Cr2S3 nanoflakes can be triggered by nitrogen doping induced new phase (space group P3¯1c). This work provides a new route to realize antiferromagnetism in atomically thin 2D magnets and greatly extend applications of 2D magnets in valleytronics and spintronics.

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2

SCHULZ, H. J. "Incommensurate Antiferromagnetism and Magnetic Domain Walls in the Two-Dimensional Hubbard Model." International Journal of Modern Physics B 03, no. 12 (December 1989): 1887–903. http://dx.doi.org/10.1142/s0217979289001226.

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The antiferromagnetism of the two-dimensional Hubbard model is investigated analytically and numerically in the vicinity of half-filling. It is found that for a small but finite concentration of holes a regularly spaced array of domain walls is formed, with the holes localized at the domain walls, i.e. one has an insulating incommensurate antifer romagnet, with a linearly polarized magnetisation pattern and a modulation wavevector proportional to the hole concentration. Above a critical concentration of holes, pockets of free carriers appear, coexisting with incommensurate antiferromagnetic order. Only at even higher hole concentration does the antiferromagnetism vanish completely. Based on a Landau expansion, the different possible antiferromagnetic states are discussed.

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3

Mai, Tran Thi Thanh, Nguyen Hong Son, and Tran Minh Tien. "Magnetic competition with different spin chiralities in kagome magnets." Journal of Physics: Conference Series 2269, no. 1 (May 1, 2022): 012006. http://dx.doi.org/10.1088/1742-6596/2269/1/012006.

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Abstract Using the Bogoliubov variational method we study the magnetic competition in a minimal model proposed for kagome magnets. The minimal model consists of itinerant electrons with their spin-orbit coupling and localized electrons with their anisotropic spin exchange. A spin exchange between localized and itinerant electrons is also included into the model, and it is anisotropic. At half filling and in the region of stable in-plane antiferromagnetism, a magnetic competition between antiferromagnetic phases with different spin chiralities is found. Depending on the sign of the hopping integral and the spin-orbit coupling, either the 1 × 1 or 3 × 3 in-plane antiferromagnetism is established. These in-plane antiferromagnetic states are characterized by distinguishable spin chiralities.

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4

IZYUMOV, Y. A., and V. M. LAPTEV. "COEXISTENCE OF SUPERCONDUCTIVITY AND ANTIFERROMAGNETISM." International Journal of Modern Physics B 05, no. 04 (February 20, 1991): 563–645. http://dx.doi.org/10.1142/s0217979291000341.

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An overview of the theoretical work on the problem of the influence of the antiferromagnetic ordering of localized spins on the superconducting state is provided. Effects of the exchange interaction of electrons with localized spins, are investigated. Separate treatment is given to the electron-magnon part of this interaction. The electron-magnon contribution is shown to affect both the singlet and triplet pairings. For different antiferromagnets — a collinear antiferromagnetic structure and a simple spiral structure — we investigate in detail the effect of the electron spectrum exchange readjustment due to the magnetic structure and analyse the relation of this effect to superconductivity. The influence of nonmagnetic impurities on the superconducting transition temperature in antiferromagnets is also noted. The entire treatment is carried out in terms of a unified approach of strong-coupling theory, by invoking the use of Eliashberg equations.

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5

LONG, M. W. "MULTIPLE-Q STRUCTURES IN FRUSTRATED ANTIFERROMAGNETS." International Journal of Modern Physics B 07, no. 16n17 (July 30, 1993): 2981–3002. http://dx.doi.org/10.1142/s0217979293003127.

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The concepts relevant to frustrated antiferromagnets are briefly reviewed. Antiferromagnets are classified according to their symmetry groups, with non-trivial point groups leading to the possibility of multiple-Q antiferromagnetism. The role of residual degeneracy is highlighted and the manner in which this degeneracy is lifted is discussed. The physical phenomena in competition within frustrated magnets, and the states that they prefer, yield ongoing theoretical research, and the way neutron scattering can be used, in conjunction with the application of pressure and magnetic fields, to determine which of the possible magnetic structures is stabilised is under experimental scrutiny. Multiple-Q antiferromagnetism finds varied and often exotic spin states with similar energies, and as such is the setting in which phase transitions between different magnetic states can be studied.

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6

NOWIK, ISRAEL, and ISRAEL FELNER. "COMPETITION BETWEEN SUPERCONDUCTIVITY AND ANTIFERROMAGNETISM." Modern Physics Letters B 05, no. 04 (February 20, 1991): 273–75. http://dx.doi.org/10.1142/s0217984991000319.

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The competition between superconductivity and Cu antiferromagnetism in the high Tc, Cu containing superconductors, ( R 1−x M x)2 CuO 4, RBa 2 Cu 3 O 7, Bi 2 Sr 2 CaCu 2 O 8 and YBa 2 Cu 4O8 is reviewed. Partial substitution of some of the ions suppresses superconductivity and leads to the establishment of antiferromagnetic order in the Cu layers.

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7

Shi, Taqing, Ye Xu, Ya-Jing Zou, and Zhao-Xi Wang. "Synthesis, structure and magnetic properties of copper(ii) azide." Dalton Transactions 48, no. 30 (2019): 11186–90. http://dx.doi.org/10.1039/c9dt01450k.

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A novel 3D copper(ii) azide built from 1D double chains with EE azide bridges has been synthesized by hydrothermal reaction. The magnetic analyses reveal that antiferromagnetic interactions are dominant with concomitant spin-canted antiferromagnetism.

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8

Yang, Xinyu, Ning Ding, Jun Chen, Ziwen Wang, Ming An, and Shuai Dong. "Electrical tuning of robust layered antiferromagnetism in MXene monolayer." Applied Physics Letters 122, no. 16 (April 17, 2023): 162403. http://dx.doi.org/10.1063/5.0142852.

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A-type antiferromagnetism, with an in-plane ferromagnetic order and the interlayer antiferromagnetic coupling, owns inborn advantages for electrical manipulations but is naturally rare in real materials except in those artificial antiferromagnetic heterostructures. Here, a robust layered antiferromagnetism with a high Néel temperature is predicted in a MXene Cr2CCl2 monolayer, which provides an ideal platform as a magnetoelectric field effect transistor. Based on first-principles calculations, we demonstrate that an electric field can induce the band splitting between spin-up and spin-down channels. Although no net magnetization is generated, the inversion symmetry between the lower Cr layer and the upper Cr layer is broken via electronic cloud distortions. Moreover, this electric field can be replaced by a proximate ferroelectric layer for non-volatility. The magneto-optic Kerr effect can be used to detect this magnetoelectricity, even if it is a collinear antiferromagnet with zero magnetization.

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9

Кабыченков, А. Ф., and Ф. В. Лисовский. "Светоиндуцированный флексоантиферромагнитный эффект в центроантисимметричных антиферромагнетиках." Журнал технической физики 92, no. 3 (2022): 453. http://dx.doi.org/10.21883/jtf.2022.03.52140.276-21.

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It is shown that an inhomogeneous circularly polarized light wave induces components of the antiferromagnetism vector in centroantisymmetric antiferromagnets; a narrow beam of light can create a skyrmion. The analysis of the possibility of practical use of the predicted effects is carried out.

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10

Kubota, Takahide, Yusuke Shimada, Tomoki Tsuchiya, Tomoki Yoshikawa, Keita Ito, Yukiharu Takeda, Yuji Saitoh, Toyohiko Konno, Akio Kimura, and Koki Takanashi. "Microstructures and Interface Magnetic Moments in Mn2VAl/Fe Layered Films Showing Exchange Bias." Nanomaterials 11, no. 7 (June 30, 2021): 1723. http://dx.doi.org/10.3390/nano11071723.

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Heusler alloys are a material class exhibiting various magnetic properties, including antiferromagnetism. A typical application of antiferromagnets is exchange bias that is a shift of the magnetization curve observed in a layered structure consisting of antiferromagnetic and ferromagnetic films. In this study, a layered sample consisting of a Heusler alloy, Mn2VAl and a ferromagnet, Fe, is selected as a material system exhibiting exchange bias. Although the fully ordered Mn2VAl is known as a ferrimagnet, with an optimum fabrication condition for the Mn2VAl layer, the Mn2VAl/Fe layered structure exhibits exchange bias. The appearance of the antiferromagnetic property in the Mn2VAl is remarkable; however, the details have been unclear. To clarify the microscopic aspects on the crystal structures and magnetic moments around the Mn2VAl/Fe interface, cross-sectional scanning transmission electron microscope (STEM) observation, and synchrotron soft X-ray magnetic circular dichroism (XMCD) measurements were employed. The high-angle annular dark-field STEM images demonstrated clusters of Mn2VAl with the L21 phase distributed only around the interface to the Fe layer in the sample showing the exchange bias. Furthermore, antiferromagnetic coupling between the Mn- and Fe-moments were observed in element-specific hysteresis loops measured using the XMCD. The locally ordered L21 phase and antiferromagnetic Mn-moments in the Mn2VAl were suggested as important factors for the exchange bias.

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11

Li, Zhaohui, Zhiqiang Zhao, Xiantao Shang, Jie Zhang, Li Cai, Yuanyuan Pan, Qinghao Li, Hongsen Li, Qiang Cao, and Qiang Li. "Electrical control of ON–OFF magnetism and exchange bias via reversible ionic motion." Applied Physics Letters 120, no. 8 (February 21, 2022): 082405. http://dx.doi.org/10.1063/5.0084190.

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The lithium-based magneto-ionic effect is an emerging and promising way to control magnetism. Here, a lithium-ion battery-structure is adopted to control the magnetic properties of the Co/CoO bilayer. Using operando magnetometry, we performed a reversible toggling of lithium ion induced magnetic phase transition between nano-Co (superparamagnetism) and CoO (antiferromagnetism), which enables an ON–OFF magnetism switching. On this basis, a robust modulation of exchange bias by electric field at low temperature is achieved. In addition, reversible tuning of coercivity and magnetization up to 71% and 118%, respectively, in a Co/CoO bilayer at room temperature are performed. This work provides a more efficient means to modulate antiferromagnetism and exchange bias, facilitating the development of antiferromagnetic spintronics.

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12

JUE-LIAN, SHEN, SU ZHAO-BIN, DONG JIN-MING, and YU LU. "POSSIBLE COEXISTENCE OF ANTIFERROMAGNETISM AND SUPERCONDUCTIVITY IN THE HUBBARD MODEL." Modern Physics Letters B 01, no. 09n10 (January 1988): 341–47. http://dx.doi.org/10.1142/s0217984988001375.

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The Hubbard model in the nearly half-filled case was studied in the mean field approximation using the effective Hamiltonian approach. Both antiferromagnetic order parameter and condensation of singlet pairs were considered. In certain parameter range the coexistence of antiferromagnetism and superconductivity is energetically favorable. Relations to the high temperature superconductivity and other theoretical approaches are also discussed.

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13

A.F. Kabychenkov and F.V. Lisovsky. "Light-induced flexoantiferomagnetic effect in centroantisymmetric antiferromagnets." Technical Physics 92, no. 3 (2022): 369. http://dx.doi.org/10.21883/tp.2022.03.53267.276-21.

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It is shown that an inhomogeneous circularly polarized light wave induces components of the antiferromagnetism vector in centroantisymmetric antiferromagnets; a narrow beam of light can create a skyrmion. The analysis of the possibility of practical use of the predicted effects is carried out. Keywords: optomagnetic effect, polyharmonic light field, light-induced magnetic field, centroantisymmetric antiferromagnet, circularly polarized light wave, flexoantiferromagnetic effect.

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14

LAKE, B., T. E. MASON, G. AEPPLI, K. LEFMANN, N. B. CHRISTENSEN, D. F. MCMORROW, K. N. CLAUSEN, et al. "FIELD-INDUCED ANTIFERROMAGNETISM IN THE HIGH-TEMPERATURE SUPERCONDUCTOR La2-xSrxCuO4." International Journal of Modern Physics B 16, no. 20n22 (August 30, 2002): 3197. http://dx.doi.org/10.1142/s0217979202013924.

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There is strong evidence that magnetic interactions play a crucial role in the mechanism driving high-temperature superconductivity in cuprate superconductors. To investigate this we have done a series of neutron scattering measurements on La 2-x Sr x CuO 4 (LSCO) in an applied magnetic field. Below Tc the field penetrates the superconductor via an array of normal state metallic inclusions or vortices. Phase coherent superconductivity characterized by zero resistance sets in at the lower field-dependent irreversibility temperature (Tirr). We have measured optimally doped LSCO (x = 0.16, Tc = 38.5 K ) and under-doped LSCO ( x = 0.10, Tc = 29 K ); both have an enhanced antiferromagnetic response in a field. Measurements of the optimally doped system at H = 7.5 T show that sub-gap spin fluctuations first disappear with the loss of finite resistivity at Tirr, but then reappear at a lower temperature with increased lifetime and correlation length compared to the normal state. In the under-doped system elastic antiferromagnetism develops below Tc in zero field, and is significantly enchanced by application of a magnetic field. Phase coherent superconductivity is then established within the antiferromagnetic phase at Tirr; thus, the situation in under-doped LSCO is the reverse of that for the optimally doped LSCO where the zero-resistance state develops first before the onset of antiferromagnetism.

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15

Vaknin, D., S. K. Sinha, C. Stassis, L. L. Miller, and D. C. Johnston. "Antiferromagnetism inSr2CuO2Cl2." Physical Review B 41, no. 4 (February 1, 1990): 1926–33. http://dx.doi.org/10.1103/physrevb.41.1926.

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16

Nakanishi, Akio, Mitsuhiro Motokawa, and Muneyuki Date. "Antiferromagnetism and Antiferromagnetic Resonancein CoCl26(H2O)1-u(D2O)u." Journal of the Physical Society of Japan 60, no. 6 (June 15, 1991): 2080–89. http://dx.doi.org/10.1143/jpsj.60.2080.

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17

Otaki, Masashi, Shota Hirokawa, and Hiromasa Goto. "Synthesis of Carbon Showing Weak Antiferromagnetic Behavior at a Low Temperature." Condensed Matter 4, no. 1 (March 21, 2019): 33. http://dx.doi.org/10.3390/condmat4010033.

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In this short communication, we report a new carbon material prepared from meta-linked polyaniline that exhibits weak antiferromagnetic interactions at low temperature. The synthesis of poly(meta-aniline), abbreviated as m-PANI, was conducted using the Ullmann reaction with the aid of Cu+ as a catalyst in the presence of K2CO3. After the generation of radical cations by vapor-phase doping with iodine, carbonization was performed to prepare carbon polyaniline (C-PANI), which comprises condensed benzene rings. Analysis with a superconducting quantum interference device revealed that the resultant carbon exhibits antiferromagnetism at low temperatures. The discovery of this weak antiferromagnetic carbon may contribute to the development of carbon magnets.

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18

Mitsiuk, V. I., A. V. Gurbanovich, An V. Gurbanovich, T. M. Tkachenko, V. I. Valkov, A. V. Golovchan, A. V. Mashirov, and Z. Surowiec. "Magnetic and Magnetocaloric Characteristics of the Mn1.9Cu0.1Sb Alloy." Радиотехника и электроника 68, no. 4 (April 1, 2023): 372–77. http://dx.doi.org/10.31857/s0033849423040095.

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The magnetic and magnetocaloric characteristics of the Mn1.9Cu0.1Sb alloy were studied. The presence of a relatively sharp decrease in the magnetization in the region of 100 K is established, which, according to ab initio calculations, can be interpreted as antiferromagnetism–ferrimagnetism transitions. The presence of a magnetic phase transition from a ferrimagnetic to an antiferromagnetic state (F ↔ AF) leads to the appearance of an inverse magnetocaloric effect, which is preserved in magnetic fields up to 10 T.

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19

LAKE, B., T. E. MASON, G. AEPPLI, K. LEFMANN, N. B. CHRISTENSEN, D. F. MCMORROW, K. N. CLAUSEN, et al. "VORTEX MAGNETISM IN THE HIGH-TEMPERATURES SUPERCONDUCTOR La2-xSrxCuO4." International Journal of Modern Physics B 16, no. 20n22 (August 30, 2002): 3155. http://dx.doi.org/10.1142/s021797920201381x.

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There is strong evidence that magnetic interactions play a crucial role in the mechanism driving high-temperature superconductivity in cuprate superconductors. To investigate this further we have done a series of neutron scattering measurements on La 2-x Sr x CuO 4 (LSCO) in an applied magnetic field. Below Tc the field penetrates the superconductor via an array of normal state metallic inclusions or vortices. Phase coherent superconductivity characterized by zero resistance sets in at the lower field-dependent irreversibility temperature (Tirr). We have measured optimally doped LSCO (x = 0.16, Tc = 38.5 K ) and underdoped LSCO (x = 0.10, Tc = 29 K ); both have an enhanced antiferromagnetic response in a field. Measurements of the optimally doped system at H = 7.5 T show that sub-gap spin fluctuations first disappear with the loss of finite resistivity at Tirr, but then reappear at a lower temperature with increased lifetime and correlation length compared to the normal state. In the underdoped system elastic antiferromagnetism develops below Tc in zero field, and is significantly enhanced by application of a magnetic field. Phase coherent superconductivity is then established within the antiferromagnetic phase at Tirr; thus, the situation in underdoped LSCO is the reverse of that for the optimally doped LSCO where the zero-resistance state develops first before the onset of antiferromagnetism.

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20

Orlov, Yu S., S. V. Nikolaev, and S. G. Ovchinnikov. "Excitonic Order in Strongly Correlated Systems with the Spin Crossover." JETP Letters 117, no. 9 (May 2023): 708–15. http://dx.doi.org/10.1134/s0021364023600878.

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Features of the formation of the magnetic structure and the exciton Bose–Einstein condensate phase of magnetic excitons in strongly correlated systems near the spin crossover have been considered with the effective Hamiltonian obtained from the two-band Hubbard–Kanamori model. The coexistence of antiferromagnetism and exciton condensate, as well as the appearance of the long-range excitonic antiferromagnetic order even in the absence of the interatomic exchange interaction, has been revealed. The role of the electron–phonon coupling has been considered.

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21

Wróbel, Piotr, and Tadeusz K. Kopeć. "ANTIFERROMAGNETIC ORDERING IN THE HUBBARD MODEL: SLAVE BOSON APPROACH, PATH-INTEGRAL FORMULATION." International Journal of Modern Physics B 03, no. 12 (December 1989): 2119–28. http://dx.doi.org/10.1142/s0217979289001354.

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The magnetic phase diagram (temperature versus doping) for the Hubbard model in the large U/t limit has been constructed by using the path-integral method. The antiferromagnetic order parameter has been represented in terms of fermion operators which correspond to neutral, spin one-half quasi-particles, spinons. Numerical calculations have been performed for the two-dimensional square lattice. A stable antiferromagnetic phase for the half-filled band has been found below a critical temperature TC=J where J=4t2/U is the superexchange interaction. It has been shown that antiferromagnetism is destroyed by doping with about 15% of holes for t/J=10. The results are discussed in the light of recent experiments for high TC oxides.

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22

Alama, S., L. Bronsard, and T. Giorgi. "Vortex structures for an SO(5) model of high-TC superconductivity and antiferromagnetism." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 130, no. 6 (December 2000): 1183–215. http://dx.doi.org/10.1017/s0308210500000639.

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We study the structure of symmetric vortices in a Ginzburg–Landau model based on Zhang's SO(5) theory of high-temperature superconductivity and antiferromagnetism. We consider both a full Ginzburg–Landau theory (with Ginzburg–Landau scaling parameter κ < ∞) and a κ → ∞ limiting model. In all cases we find that the usual superconducting vortices (with normal phase in the central core region) become unstable (not energy minimizing) when the chemical potential crosses a threshold level, giving rise to a new vortex profile with antiferromagnetic ordering in the core region. We show that this phase transition in the cores is due to a bifurcation from a simple eigenvalue of the linearized equations. In the limiting large-κ model, we prove that the antiferromagnetic core solutions are always non-degenerate local energy minimizers and prove an exact multiplicity result for physically relevant solutions.

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23

Scheie, Allen, Jonas Kindervater, Shu Zhang, Hitesh J. Changlani, Gabriele Sala, Georg Ehlers, Andre Heinemann, Gregory S. Tucker, Seyed M. Koohpayeh, and Collin Broholm. "Multiphase magnetism in Yb2Ti2O7." Proceedings of the National Academy of Sciences 117, no. 44 (October 23, 2020): 27245–54. http://dx.doi.org/10.1073/pnas.2008791117.

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We use neutron scattering to show that ferromagnetism and antiferromagnetism coexist in the low T state of the pyrochlore quantum magnetYb2Ti2O7. While magnetic Bragg peaks evidence long-range static ferromagnetic order, inelastic scattering shows that short-range correlated antiferromagnetism is also present. Small-angle neutron scattering provides direct evidence for mesoscale magnetic structure that we associate with metastable antiferromagnetism. Classical Monte Carlo simulations based on exchange interactions inferred from⟨111⟩-oriented high-field spin wave measurements confirm that antiferromagnetism is metastable within the otherwise ferromagnetic ground state. The apparent lack of coherent spin wave excitations and strong sensitivity to quenched disorder characterizingYb2Ti2O7is a consequence of this multiphase magnetism.

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24

Ramakrishnan, S., K. Ghosh, and Girish Chandra. "Antiferromagnetism in theDy5Ir4Si10system." Physical Review B 45, no. 18 (May 1, 1992): 10769–70. http://dx.doi.org/10.1103/physrevb.45.10769.

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25

Weinert, M., and G. W. Fernando. "Antiferromagnetism of CuO2layers." Physical Review B 39, no. 1 (January 1, 1989): 835–38. http://dx.doi.org/10.1103/physrevb.39.835.

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26

Vaknin, D., S. K. Sinha, D. E. Moncton, D. C. Johnston, J. M. Newsam, C. R. Safinya, and H. E. King. "Antiferromagnetism inLa2CuO4−y." Physical Review Letters 58, no. 26 (June 29, 1987): 2802–5. http://dx.doi.org/10.1103/physrevlett.58.2802.

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27

Sigmund, E., and K. W. H. Stevens. "Antiferromagnetism and superconductivity." Journal of Physics C: Solid State Physics 20, no. 35 (December 20, 1987): 6025–32. http://dx.doi.org/10.1088/0022-3719/20/35/017.

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28

Stajic, Jelena. "Strain controls antiferromagnetism." Science 363, no. 6427 (February 7, 2019): 596.6–596. http://dx.doi.org/10.1126/science.363.6427.596-f.

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29

Jonason, Kristian, K. Ghosh, S. Ramakrishnan, and Girish Chandra. "Antiferromagnetism in theHo5Os4Ge10system." Physical Review B 50, no. 10 (September 1, 1994): 7169–72. http://dx.doi.org/10.1103/physrevb.50.7169.

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30

Szytuła, A., B. Penc, M. Hofmann, and J. Przewoźnik. "Antiferromagnetism of ThCr2Si2." Solid State Communications 152, no. 12 (June 2012): 1027–29. http://dx.doi.org/10.1016/j.ssc.2012.03.015.

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31

Tranquada, J. M., A. H. Moudden, A. I. Goldman, P. Zolliker, D. E. Cox, G. Shirane, S. K. Sinha, et al. "Antiferromagnetism inYBa2Cu3O6+x." Physical Review B 38, no. 4 (August 1, 1988): 2477–85. http://dx.doi.org/10.1103/physrevb.38.2477.

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32

Canepa, F., S. Cirafici, F. Merlo, M. Pani, and C. Ferdeghini. "Antiferromagnetism in Gd2Ni2Cd." Journal of Magnetism and Magnetic Materials 195, no. 3 (June 1999): 646–50. http://dx.doi.org/10.1016/s0304-8853(99)00158-4.

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33

Mizuki, J., Y. Kubo, T. Manako, Y. Shimakawa, H. Igarashi, J. M. Tranquada, Y. Fujii, L. Rebelsky, and G. Shirane. "Antiferromagnetism in TlBa2YCu2O7." Physica C: Superconductivity 156, no. 5 (December 1988): 781–84. http://dx.doi.org/10.1016/0921-4534(88)90159-1.

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34

Petitgrand, Daniel, and Gaston Collin. "Antiferromagnetism in YBa2Cu3O6." Physica C: Superconductivity 153-155 (June 1988): 192–93. http://dx.doi.org/10.1016/0921-4534(88)90547-3.

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35

Moudden, A. H., G. Shirane, J. M. Tranquada, R. J. Birgeneau, Y. Endoh, K. Yamada, Y. Hidaka, and T. Murakami. "Antiferromagnetism in NdBa2Cu3O6.1." Physica B: Condensed Matter 156-157 (January 1989): 861–63. http://dx.doi.org/10.1016/0921-4526(89)90814-4.

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36

Szpunar, Barbara, and Vedene H. Smith. "Antiferromagnetism and semiconductivity." Physica B: Condensed Matter 163, no. 1-3 (April 1990): 29–33. http://dx.doi.org/10.1016/0921-4526(90)90121-a.

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37

Albedah, Mohammed A., Khalid Al-Qadi, Zbigniew M. Stadnik, and Janusz Przewoźnik. "Antiferromagnetism in EuPdGe3." Journal of Alloys and Compounds 613 (November 2014): 344–50. http://dx.doi.org/10.1016/j.jallcom.2014.05.115.

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38

Bussmann-holder, A., and A. R. Bishop. "Antiferromagnetism and superconductivity." Philosophical Magazine B 76, no. 6 (December 1997): 887–94. http://dx.doi.org/10.1080/01418639708243136.

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39

WRÓBEL, PIOTR, and TADEUSZ K. KOPEĆ. "ON ANTIFERROMAGNETIC INSTABILITY IN THE HUBBARD MODEL." International Journal of Modern Physics B 03, no. 11 (November 1989): 1681–90. http://dx.doi.org/10.1142/s021797928900107x.

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A functional integral method applied to the Hubbard model has been used to construct the magnetic phase diagram (temperature versus doping) for large U/t. The antiferromagnetic order parameter has been represented in terms of fermion operators which correspond to neutral, spin one-half quasi-particles i.e. spinons. Static approximation has been applied. Numerical calculations have been performed for the two-dimensional square lattice. A stable antiferromagnetic phase for the half-filled band has been found below the critical temperature TN=J where J=4t2/U is the superexchange interaction. It has been shown that antiferromagnetism is destroyed by doping with about 15% of holes for t/J=10. The results are discussed in the light of recent experiments for high Tc oxides.

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Otieno, Tom, and Robert C. Thompson. "Antiferromagnetism and metamagnetism in 1,4-diazine and pyridine complexes of nickel(II)." Canadian Journal of Chemistry 73, no. 2 (February 1, 1995): 275–83. http://dx.doi.org/10.1139/v95-037.

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Several nickel(II) complexes containing pyridine (py), pyrazine (pyz) or methylpyrazine (mepyz) have been synthesized and characterized by vibrational and electronic spectroscopy, differential scanning calorimetry, and magnetic susceptibility studies to cryogenic temperatures. A comparison of the magnetic properties of the polymeric diazine-bridged complexes, Ni(pyz)2X2 (X = Cl or NO3), Ni(pyz)(p-CH3C6H4SO3)2, Ni(mepyz)(NO3)2, and Ni(pyz)3(CH3SO3)2•CH3OH with those of the related monometallic systems, Ni(py)4X2 (X = Cl, p-CH3C6H4SO3 or CH3SO3) and Ni(mepyz)4(NO3)2•H2O provides evidence for weak antiferromagnetic coupling between metal centers mediated by bridging diazine ligands in the former group of compounds. The magnetic properties were analyzed employing a model for S = 1 which takes into account zero-field splitting and employs a molecular field term to account for weak magnetic exchange. The compounds Ni(pyz)Cl2 and Ni(py)Cl2 show metamagnetic behaviour with critical fields of 13 and 2 kOe, respectively, at 2 K. In these compounds nickel ions, linked in chains by bridging chlorides, exhibit intrachain ferromagnetic and interchain antiferromagnetic exchange. In Ni(pyz)Cl2 bridging pyrazine ligands are considered to provide the pathway for the antiferromagnetic coupling resulting in a high critical field. Keywords: nickel(II), pyrazine, pyridine, complexes, metamagnetism, antiferromagnetism.

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41

Cao, Ning, Xue Chen, Xinrun Mi, Saisai Qiao, Liyu Zhang, Kunling Peng, Mingquan He, Aifeng Wang, Yisheng Chai, and Xiaoyuan Zhou. "Angle dependent field-driven reorientation transitions in uniaxial antiferromagnet MnBi₂Te₄ single crystal." Applied Physics Letters 120, no. 16 (April 18, 2022): 163102. http://dx.doi.org/10.1063/5.0086502.

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MnBi2Te4, a two-dimensional magnetic topological insulator with a uniaxial antiferromagnetic structure, is an ideal platform to realize quantum anomalous Hall effects. However, the strength of magnetic interactions is not clear yet. We performed systematic studies on the magnetization and angle dependent magnetotransport on MnBi2Te4 single crystals. The results show that the direction of the magnetic field has significant effects on the critical field values and the magnetic structure of this compound, which lead to different magnetotransport behaviors. The field-driven reorientation transitions can be utilized to estimate the antiferromagnetic interlayer exchange interaction coupling Jc and uniaxial magnetic anisotropy D. The obtained Hamiltonian can well explain the experimental data by Monte Carlo simulations. Our comprehensive studies on the field-driven magnetic transition phenomenon in MnBi2Te4 provide a general approach for other topological systems with antiferromagnetism.

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Mazumdar, Dipak, and I. Das. "Structural, magnetic, and magnetocaloric properties of the multiferroic host double perovskite compound Pr2FeCrO6." Physical Chemistry Chemical Physics 23, no. 9 (2021): 5596–606. http://dx.doi.org/10.1039/d0cp06447e.

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Three different magnetic phase alterations, viz. canted antiferromagnetism, spin-reorientation, and C-type antiferromagnetism, and the magnetocaloric properties of the disordered Pr₂FeCrO₆ double perovskite have been reported in this article.

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43

Jagličić, Zvonko, and Zoran Mazej. "Antiferromagnetic CsCrF 5 and canted antiferromagnetism in RbCrF 5 and KCrF 5." Journal of Magnetism and Magnetic Materials 434 (July 2017): 112–17. http://dx.doi.org/10.1016/j.jmmm.2017.03.048.

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44

Koepsell, Joannis, Dominik Bourgund, Pimonpan Sompet, Sarah Hirthe, Annabelle Bohrdt, Yao Wang, Fabian Grusdt, et al. "Microscopic evolution of doped Mott insulators from polaronic metal to Fermi liquid." Science 374, no. 6563 (October 2021): 82–86. http://dx.doi.org/10.1126/science.abe7165.

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From polarons to a Fermi liquid Superconductivity in the cuprates emerges by doping an antiferromagnetic “parent” state with holes or electrons. With increased doping, antiferromagnetism gives way to unconventional superconductivity, and the system eventually becomes a Fermi liquid. Koepsell et al . simulated this progression using cold, strongly interacting lithium-6 atoms trapped in an optical lattice. Although the equivalent ordered phases are not yet reachable at the experimentally available temperatures, the researchers were able to measure multipoint spin and hole correlations over a wide range of hole doping. The evolution of these correlators with doping revealed a crossover from a polaronic regime to a Fermi liquid. —JS

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Li, Zhi, Dan-Dan Xu, Shu-Yu Ning, Haibin Su, Toshiaki Iitaka, Takami Tohyama, and Jiu-Xing Zhang. "Predicted Weyl fermions in magnetic GdBi and GdSb." International Journal of Modern Physics B 31, no. 29 (November 7, 2017): 1750217. http://dx.doi.org/10.1142/s0217979217502174.

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Motivated by the chiral anomaly steering negative longitudinal magnetoresistance in GdBiPt under external magnetic field, we studied the electronic structures of GdBi with paramagnetism, antiferromagnetism and ferromagnetism by first-principles calculations with modified Becke and Johnson local density approximation plus Hubbard [Formula: see text]. Our calculated results reveal that paramagnetic GdBi is semiconducting, while the antiferromagnetic GdBi is a topological nontrivial compensation metal. We also predict the presence of a pair of Weyl fermions in ferromagnetic GdBi and GdSb. The band crossing along the direction of magnetization is protected by the fourfold rotation symmetry, and the topological charge associating with each [Formula: see text] band crossing point is [Formula: see text].

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PUNNOOSE, ALEX, JILSON MATHEW, B. P. MAURYA, MOHD UMAR, and R. J. SINGH. "ESR STUDY OF CuO BULK POWDER AND THIN FILMS." Modern Physics Letters B 06, no. 16n17 (July 1992): 1043–47. http://dx.doi.org/10.1142/s0217984992001873.

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A systematic Electron Spin Resonance investigation is carried out in CuO bulk powder and thin films, after calcining them to different temperatures ranging from 100°C to 1000°C. In CuO powder, two separate signals (one broad and one sharp) were observed at calcination temperature of 500°C, for the fist time. They got intensified, came closer and amalgamated on further heating upto 800°C, indicating complete destruction of antiferromagnetic ordering in this powdered compound. In thin films of CuO, the first appearance of the signal at 200°C and its intensification and shifting on further heating indicates that in thin film form, the destruction of antiferromagnetism takes place much earlier.

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Beyermann, W. P., M. F. Hundley, P. C. Canfield, J. D. Thompson, Z. Fisk, J. L. Smith, M. Selsane, C. Godart, and M. Latroche. "Heavy-electron antiferromagnetism inCePt2Sn2." Physical Review Letters 66, no. 25 (June 24, 1991): 3289–92. http://dx.doi.org/10.1103/physrevlett.66.3289.

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Blackburn, Elizabeth. "Antiferromagnetism with a twist." Nature Physics 15, no. 7 (April 29, 2019): 625–26. http://dx.doi.org/10.1038/s41567-019-0522-8.

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Sachdev, S. "Entangling Superconductivity and Antiferromagnetism." Science 336, no. 6088 (June 21, 2012): 1510–11. http://dx.doi.org/10.1126/science.1223586.

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Forsyth, J. B., C. Wilkinson, S. Paster, and B. M. Wanklyn. "Antiferromagnetism in cobalt orthophosphate." Journal of Physics C: Solid State Physics 21, no. 10 (April 10, 1988): 2005–13. http://dx.doi.org/10.1088/0022-3719/21/10/018.

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