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Artykuły w czasopismach na temat „Quantum Melting”

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Data publikacji: 6 września 2023

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1

Agbenyega, Jonathan. "Quantum melting". Materials Today 13, nr 6 (czerwiec 2010): 10. http://dx.doi.org/10.1016/s1369-7021(10)70098-5.

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2

Belousov, A. I., i Yu E. Lozovik. "Quantum melting of mesoscopic clusters". Physics of the Solid State 41, nr 10 (październik 1999): 1705–10. http://dx.doi.org/10.1134/1.1131073.

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3

Chakravarty, Charusita. "Quantum delocalization and cluster melting". Journal of Chemical Physics 103, nr 24 (22.12.1995): 10663–68. http://dx.doi.org/10.1063/1.469852.

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4

Burakovsky, Leonid, i Dean L. Preston. "Unified Analytic Melt-Shear Model in the Limit of Quantum Melting". Applied Sciences 12, nr 21 (4.11.2022): 11181. http://dx.doi.org/10.3390/app122111181.

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Quantum melting is the phenomenon of cold (zero-temperature) melting of a pressure-ionized substance which represents a lattice of bare ions immersed in the background of free electrons, i.e., the so-called one-component plasma (OCP). It occurs when the compression of the substance corresponds to the zero-point fluctuations of its ions being so large that the ionic ordered state can no longer exist. Quantum melting corresponds to the classical melting curve reaching a turnaround point beyond which it starts going down and eventually terminates, when zero temperature is reached, at some critical density. This phenomenon, as well as the opposite phenomenon of quantum crystallization, may occur in dense stellar objects such as white dwarfs, and may play an important role in their evolution that requires a reliable thermoelasticity model for proper physical description. Here we suggest a modification of our unified analytic melt-shear thermoelasticity model in the region of quantum melting, and derive the corresponding Grüneisen parameters. We demonstrate how the new functional form for the cold shear modulus can be combined with a known equation of state. One of the constituents of the new model is the melting curve of OCP crystal which we also present. The inclusion of quantum melting implies that the modified model becomes applicable in the entire density range of the existence of the solid state, up to the critical density of quantum melting above which the solid state does not exist. Our approach can be generalized to model melting curves and cold shear moduli of different solid phases of a multi-phase material over the corresponding ranges of mechanical stability.
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5

Beck, Thomas L., J. D. Doll i David L. Freeman. "The quantum mechanics of cluster melting". Journal of Chemical Physics 90, nr 10 (15.05.1989): 5651–56. http://dx.doi.org/10.1063/1.456687.

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6

Marx, D., i P. Nielaba. "Quantum ‘‘melting’’ of orientationally ordered physisorbates". Journal of Chemical Physics 102, nr 11 (15.03.1995): 4538–47. http://dx.doi.org/10.1063/1.469502.

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7

Tosatti, E., i R. Martoňák. "Rotational melting in displacive quantum paraelectrics". Solid State Communications 92, nr 1-2 (październik 1994): 167–80. http://dx.doi.org/10.1016/0038-1098(94)90870-2.

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8

Kitamura, Toyoyuki. "A quantum field theory of melting". Physica A: Statistical Mechanics and its Applications 160, nr 2 (październik 1989): 181–94. http://dx.doi.org/10.1016/0378-4371(89)90415-9.

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9

Attanasio, C., C. Coccorese, L. Maritato, S. L. Prischepa, M. Salvato, B. Engel i C. M. Falco. "Quantum vortex melting in Nb/CuMn multilayers". Physical Review B 53, nr 3 (15.01.1996): 1087–90. http://dx.doi.org/10.1103/physrevb.53.1087.

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10

Zyubin, M. V., I. A. Rudnev i V. A. Kashurnikov. "Numerical study of vortex system quantum melting". Physics Letters A 332, nr 5-6 (listopad 2004): 456–60. http://dx.doi.org/10.1016/j.physleta.2004.08.064.

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11

Nakatsu, Toshio, i Kanehisa Takasaki. "Melting Crystal, Quantum Torus and Toda Hierarchy". Communications in Mathematical Physics 285, nr 2 (1.08.2008): 445–68. http://dx.doi.org/10.1007/s00220-008-0583-5.

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12

Freiman, Yu A., V. V. Sumarokov, A. P. Brodyanskii i A. Jezowski. "Quantum melting in a system of rotors". Journal of Physics: Condensed Matter 3, nr 21 (27.05.1991): 3855–58. http://dx.doi.org/10.1088/0953-8984/3/21/018.

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13

Pikus, F. G., i A. L. Efros. "New quantum Monte-Carlo method for strongly correlated systems. Quantum melting". Solid State Communications 92, nr 6 (listopad 1994): 485–88. http://dx.doi.org/10.1016/0038-1098(94)90483-9.

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14

TANERI, SENCER. "A STOCHASTIC MECHANISM FOR DNA MELTING". International Journal of Modern Physics C 24, nr 11 (14.10.2013): 1350077. http://dx.doi.org/10.1142/s0129183113500770.

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Deoxyribonucleic acid (DNA) is a kind of nucleic acid consisting of two strands which are made up of two Watson–Crick base pairs: adenine–thymine (AT) and guanine–cytosine (GC). There are three components of the total energy. These are the inharmonic stacking interaction, hydrogen bond interaction and the kinetic energy. Morse potential is used to mimic the hydrogen bond interaction between bases on the opposite strands for the overlapping π electrons, when two neighboring bases move out of the stack. The AT pair has 2 hydrogen bonds and the GC pair has 3 of them. The π electrons obey Bose–Einstein (BE) statistics, and the overlapping of them results in quantum fluctuation. It will be shown that this can be simplified into 〈Δy(t)Δy(t)〉 = 2DqΔt type fluctuation between the base pairs. Thus, a metropolis algorithm can be developed for the total potential energy by superposing two potential energy terms as well as including the quantum fluctuation in terms of random displacement of the π electrons. So, one can calculate the melting temperature of base pairs.
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15

Dolgopolov, Valerii T. "Quantum melting of a two-dimensional Wigner crystal". Uspekhi Fizicheskih Nauk 187, nr 07 (styczeń 2017): 785–97. http://dx.doi.org/10.3367/ufnr.2017.01.038051.

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16

Timm, Carsten, S. M. Girvin i H. A. Fertig. "Skyrmion lattice melting in the quantum Hall system". Physical Review B 58, nr 16 (15.10.1998): 10634–47. http://dx.doi.org/10.1103/physrevb.58.10634.

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17

Chui, S. T., i K. Esfarjani. "A Mechanism for Quantum Melting in Two Dimensions". Europhysics Letters (EPL) 14, nr 4 (15.02.1991): 361–65. http://dx.doi.org/10.1209/0295-5075/14/4/013.

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18

Dolgopolov, V. T. "Quantum melting of a two-dimensional Wigner crystal". Physics-Uspekhi 60, nr 7 (31.07.2017): 731–42. http://dx.doi.org/10.3367/ufne.2017.01.038051.

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19

Baroni, Stefano, i Saverio Moroni. "Computer Simulation of Quantum Melting in Hydrogen Clusters". ChemPhysChem 6, nr 9 (12.09.2005): 1884–88. http://dx.doi.org/10.1002/cphc.200400657.

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20

MINAKOV, D. V., M. A. PARAMONOV i P. R. LEVASHOV. "Interpretation of pulse-heating experiments for rhenium by quantum molecular dynamics". High Temperatures-High Pressures 49, nr 1-2 (2020): 211–19. http://dx.doi.org/10.32908/hthp.v49.837.

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We present quantum molecular dynamics calculations of thermophysical properties of solid and liquid rhenium in the vicinity of melting. We show that some pulse-heating experiments for rhenium can be independently described by the first-principle calculations. Our calculations predict significant volume change of about 6% at melting. We also provide our estimation of the enthalpy of fusion, which is about 33.6 kJ/mol.
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21

Estarellas, M. P., T. Osada, V. M. Bastidas, B. Renoust, K. Sanaka, W. J. Munro i K. Nemoto. "Simulating complex quantum networks with time crystals". Science Advances 6, nr 42 (październik 2020): eaay8892. http://dx.doi.org/10.1126/sciadv.aay8892.

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Crystals arise as the result of the breaking of a spatial translation symmetry. Similarly, translation symmetries can also be broken in time so that discrete time crystals appear. Here, we introduce a method to describe, characterize, and explore the physical phenomena related to this phase of matter using tools from graph theory. The analysis of the graphs allows to visualizing time-crystalline order and to analyze features of the quantum system. For example, we explore in detail the melting process of a minimal model of a period-2 discrete time crystal and describe it in terms of the evolution of the associated graph structure. We show that during the melting process, the network evolution exhibits an emergent preferential attachment mechanism, directly associated with the existence of scale-free networks. Thus, our strategy allows us to propose a previously unexplored far-reaching application of time crystals as a quantum simulator of complex quantum networks.
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22

Feiner, Louis Felix, Andrzej M. Oleś i Jan Zaanen. "Quantum Melting of Magnetic Order due to Orbital Fluctuations". Physical Review Letters 78, nr 14 (7.04.1997): 2799–802. http://dx.doi.org/10.1103/physrevlett.78.2799.

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23

Blatter, Gianni, i Boris Ivlev. "Quantum melting of the vortex lattice in high-Tcsuperconductors". Physical Review Letters 70, nr 17 (26.04.1993): 2621–24. http://dx.doi.org/10.1103/physrevlett.70.2621.

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24

Li, D. F., P. Zhang, J. Yan i H. Y. Liu. "Melting curve of lithium from quantum molecular-dynamics simulations". EPL (Europhysics Letters) 95, nr 5 (17.08.2011): 56004. http://dx.doi.org/10.1209/0295-5075/95/56004.

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25

Chakravarty, Charusita. "Isothermal-isobaric ensemble simulations of melting in quantum solids". Physical Review B 59, nr 5 (1.02.1999): 3590–98. http://dx.doi.org/10.1103/physrevb.59.3590.

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26

Fratini, S., B. Valenzuela i D. Baeriswyl. "Incipient quantum melting of the one-dimensional Wigner lattice". Synthetic Metals 141, nr 1-2 (marzec 2004): 193–96. http://dx.doi.org/10.1016/j.synthmet.2003.10.030.

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27

Alfè, D., G. D. Price i M. J. Gillan. "The melting curve of iron from quantum mechanics calculations". Journal of Physics and Chemistry of Solids 65, nr 8-9 (sierpień 2004): 1573–80. http://dx.doi.org/10.1016/j.jpcs.2003.12.014.

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28

Chakravarty, C., i R. M. Lynden-Bell. "Landau free energy curves for melting of quantum solids". Journal of Chemical Physics 113, nr 20 (22.11.2000): 9239–47. http://dx.doi.org/10.1063/1.1316105.

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29

Müser, M. H., i J. Ankerhold. "Orientational quantum melting of linear rotors pinned onto surfaces". Europhysics Letters (EPL) 44, nr 2 (15.10.1998): 216–21. http://dx.doi.org/10.1209/epl/i1998-00459-5.

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30

Kitamura, Toyoyuki. "A quantum field theory of melting and lattice dynamics". Physica A: Statistical Mechanics and its Applications 135, nr 1 (marzec 1986): 21–37. http://dx.doi.org/10.1016/0378-4371(86)90104-4.

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31

Lu, Liping, Linqing Guo, Xiayan Wang, Tianfang Kang i Shuiyuan Cheng. "Complexation and intercalation modes: a novel interaction of DNA and graphene quantum dots". RSC Advances 6, nr 39 (2016): 33072–75. http://dx.doi.org/10.1039/c6ra00930a.

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32

Lozovik, Yu E., S. Yu Volkov i M. Willander. "Crystallization and quantum melting of few electron system in a spherical quantum dot: quantum Monte Carlo simulation". Solid State Communications 125, nr 2 (styczeń 2003): 127–31. http://dx.doi.org/10.1016/s0038-1098(02)00484-2.

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33

Wang, Lei, i Qi Chen. "Study on the Stabilization of Heavy Metal by Cement with Quantum Chemistry". Advanced Materials Research 955-959 (czerwiec 2014): 2935–39. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2935.

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The quantum chemistry is a kind of efficient theoretical research methodology; it has become an important foundation and core technology to the computational materials science. The researches of melting mechanism, doping mechanism, mechanism of hydration activity can be used in the related areas of stabilization of heavy metal by cement. Density functional theory is reviewed in the study of the affective mechanism of cement hydration activity and the intensity of hydration by heavy metal, the mechanism of fixating heavy metals by mineral and the mechanism of lowering melting temperature. It is considered that quantum chemistry can be used to make a simulation at the micro level to explore the mechanism of cement-enclosed heavy metals and has a perfect theoretical guiding significance for further research.
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34

Chen, Yiping, Zuan Lin, Chenfang Miao, Qianqian Cai, Fenglan Li, Zongfu Zheng, Xinhua Lin, Yanjie Zheng i Shaohuang Weng. "A simple fluorescence assay for trypsin through a protamine-induced carbon quantum dot-quenching aggregation platform". RSC Advances 10, nr 45 (2020): 26765–70. http://dx.doi.org/10.1039/d0ra03970e.

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35

Wong, Y. Joanna, i G. V. Chester. "Quantum Monte Carlo study of pressure melting in Yukawa systems". Physical Review B 37, nr 16 (1.06.1988): 9590–607. http://dx.doi.org/10.1103/physrevb.37.9590.

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36

Fratini, S., i P. Quémerais. "Quantum and/or thermal melting of a polaron Wigner crystal". Le Journal de Physique IV 09, PR10 (grudzień 1999): Pr10–259—Pr10–261. http://dx.doi.org/10.1051/jp4:19991065.

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37

Sanford, Lindsay N., Jana O. Kent i Carl T. Wittwer. "Quantum Method for Fluorescence Background Removal in DNA Melting Analysis". Analytical Chemistry 85, nr 20 (26.09.2013): 9907–15. http://dx.doi.org/10.1021/ac4024928.

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38

de Andrade, Rubens, i Oscar F. de Lima. "Melting line with quantum correction in a melt-texturedYBa2Cu3O7−δsample". Physical Review B 51, nr 14 (1.04.1995): 9383–86. http://dx.doi.org/10.1103/physrevb.51.9383.

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39

Arulsamy, A. D. "Quantum thermodynamics at critical points during melting and solidification processes". Indian Journal of Physics 88, nr 6 (8.02.2014): 609–20. http://dx.doi.org/10.1007/s12648-014-0450-5.

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40

LIU, QUAN, i LI-RONG CHEN. "ANALYSIS OF MELTING FOR ALKALI EARTH AND ALKALI OXIDES BASED ON THE DIFFUSIONAL FORCE THEORY". Modern Physics Letters B 18, nr 21n22 (30.09.2004): 1101–7. http://dx.doi.org/10.1142/s0217984904007621.

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An analysis of the melting alkali earth and alkali oxides is presented using the concept of diffusional force. The calculations are performed by developing an ionic model based on Harrison's quantum mechanical treatment of overlap repulsive potential which takes into account the interactions up to second neighbors. Van der Waals dipole–dipole and dipole–quadrupole interactions calculated by more accurate methods are also included in the model. Using the formula by Fang, derived on the basis of thermodynamic analysis, the values of interionic distances for 8 alkali earth and alkali oxides at melting have been obtained. A simple model for melting is developed based on the diffusional force models. The values of Tm thus obtained are found to show fairly good agreement with experimental values of melting temperatures.
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41

NEILSON, DAVID, ALEXANDER R. HAMILTON i JAGDISH S. THAKUR. "QUANTUM GLASS TRANSITION AT FINITE TEMPERATURE IN TWO-DIMENSIONAL ELECTRON LAYERS". International Journal of Modern Physics B 27, nr 29 (5.11.2013): 1347004. http://dx.doi.org/10.1142/s0217979213470048.

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We have investigated the formation of a quantum glass at finite temperatures in low-density two-dimensional conducting systems in semiconductor heterostructures. Using a memory function formalism we have determined the quantum glass melting curve for weak disorder as a function of density and temperature, and show that the glass-liquid transition is only weakly affected by increasing temperature at the least up to the Fermi temperature.
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42

Penzkofer, Silapetere i Hegemann. "Absorption and Emission Spectroscopic Investigation of the Thermal Dynamics of the Archaerhodopsin 3 Based Fluorescent Voltage Sensor QuasAr1". International Journal of Molecular Sciences 20, nr 17 (21.08.2019): 4086. http://dx.doi.org/10.3390/ijms20174086.

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QuasAr1 is a fluorescent voltage sensor derived from Archaerhodopsin 3 (Arch) of Halorubrum sodomense by directed evolution. Here we report absorption and emission spectroscopic studies of QuasAr1 in Tris buffer at pH 8. Absorption cross-section spectra, fluorescence quantum distributions, fluorescence quantum yields, and fluorescence excitation spectra were determined. The thermal stability of QuasAr1 was studied by long-time attenuation coefficient measurements at room temperature (23 ± 2 °C) and at 2.5 ± 0.5 °C. The apparent melting temperature was determined by stepwise sample heating up and cooling down (obtained apparent melting temperature: 65 ± 3 °C). In the protein melting process the originally present protonated retinal Schiff base (PRSB) with absorption maximum at 580 nm converted to de-protonated retinal Schiff base (RSB) with absorption maximum at 380 nm. Long-time storage of QuasAr1 at temperatures around 2.5 °C and around 23 °C caused gradual protonated retinal Schiff base isomer changes to other isomer conformations, de-protonation to retinal Schiff base isomers, and apoprotein structure changes showing up in ultraviolet absorption increase. Reaction coordinate schemes are presented for the thermal protonated retinal Schiff base isomerizations and deprotonations in parallel with the dynamic apoprotein restructurings.
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43

GOLDMAN, VLADIMIR J. "EXPERIMENTAL EVIDENCE FOR THE TWO-DIMENSIONAL QUANTUM WIGNER CRYSTAL". Modern Physics Letters B 05, nr 17 (20.07.1991): 1109–19. http://dx.doi.org/10.1142/s0217984991001362.

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I review recently reported observations of an electric field threshold conduction and of the related ac voltage ("broadband noise") generation in low-disorder two-dimensional electron systems in extreme magnetic quantum limit. These phenomena are interpreted as direct evidence for formation of a pinned quantum Wigner crystal. Wigner crystal melting phase diagram as a function of filling factor ν was determined from the disappearance of the threshold behavior at higher temperatures. The solid phase was found to be reentrant in that it is observed to be interrupted by the ν = 1/5 fractional quantum Hall state.
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44

Zhao, Zhi Gang, Cun Li Dai i Lun Wu Zeng. "The Quantuam Melting Transitions with the Magnetic Field in Weakly Disordered Josephson Junction Arrays". Applied Mechanics and Materials 380-384 (sierpień 2013): 4845–48. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.4845.

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Using the resistively shunted junction model, we study the magnetic field induced dynamic melting transitions of a current-driven vortex system in two-dimensional weakly disordered Josephson junction arrays at zero temperature. From the unified model simulations, we find that the intrinsic quantum vortex liquid (QVL) phenomenon, which consistent with the recent experimental reports in disordered and superconducting MoGe films. The enhancement of critical current in the QVL phase arises from intrinsic quantum fluctuations in the moving vortex flow.
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45

CHEN, YONG P., G. SAMBANDAMURTHY, L. W. ENGEL, D. C. TSUI, L. N. PFEIFFER i K. W. WEST. "MICROWAVE RESONANCE STUDY OF MELTING IN HIGH MAGNETIC FIELD WIGNER SOLID". International Journal of Modern Physics B 21, nr 08n09 (10.04.2007): 1379–85. http://dx.doi.org/10.1142/s0217979207042860.

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Wigner solids in two-dimensional electron systems in high magnetic field B exhibit a striking, microwave or rf resonance, that is understood as a pinning mode. The temperature, Tm, above which the resonance is absent, is interpreted as the melting temperature of the solid. Studies of Tm for many B and many sample densities n show that Tm is a function of the Landau level filling ν alone for a given sample. This indicates that quantum mechanics figures importantly in the melting. Tm also appears to be increased by larger sample disorder.
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46

Blazquez, S., i C. Vega. "Melting points of water models: Current situation". Journal of Chemical Physics 156, nr 21 (7.06.2022): 216101. http://dx.doi.org/10.1063/5.0093815.

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By using the direct coexistence method, we have calculated the melting points of ice I h at normal pressure for three recently proposed water models, namely, TIP3P-FB, TIP4P-FB, and TIP4P-D. We obtained T m = 216 K for TIP3P-FB, T m = 242 K for TIP4P-FB, and T m = 247 K for TIP4P-D. We revisited the melting point of TIP4P/2005 and TIP5P obtaining T m = 250 and 274 K, respectively. We summarize the current situation of the melting point of ice I h for a number of water models and conclude that no model is yet able to simultaneously reproduce the melting temperature of ice I h and the temperature of the maximum in density at room pressure. This probably points toward our both still incomplete knowledge of the potential energy surface of water and the necessity of incorporating nuclear quantum effects to describe both properties simultaneously.
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47

Penzkofer, Alfons, Arita Silapetere i Peter Hegemann. "Absorption and Emission Spectroscopic Investigation of the Thermal Dynamics of the Archaerhodopsin 3 Based Fluorescent Voltage Sensor Archon2". International Journal of Molecular Sciences 21, nr 18 (8.09.2020): 6576. http://dx.doi.org/10.3390/ijms21186576.

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Archon2 is a fluorescent voltage sensor derived from Archaerhodopsin 3 (Arch) of Halorubrum sodomense using robotic multidimensional directed evolution approach. Here we report absorption and emission spectroscopic studies of Archon2 in Tris buffer at pH 8. Absorption cross-section spectra, fluorescence quantum distributions, fluorescence quantum yields, and fluorescence excitation spectra were determined. The thermal stability of Archon2 was studied by long-time attenuation coefficient measurements at room temperature (21 ± 1 °C) and at refrigerator temperature (3 ± 1 °C). The apparent melting temperature was determined by stepwise sample heating up and cooling down (obtained apparent melting temperature: 63 ± 3 °C). In the protein melting process protonated retinal Schiff base (PRSB) with absorption maximum at 586 nm converted to de-protonated retinal Schiff base (RSB) with absorption maximum at 380 nm. Storage of Archon2 at room temperature and refrigerator temperature caused absorption coefficient decrease because of partial protein clustering to aggregates at condensation nuclei and sedimentation. At room temperature an onset of light scattering was observed after two days because of the beginning of protein unfolding. During the period of observation (18 days at 21 °C, 22 days at 3 °C) no change of retinal isomer composition was observed indicating a high potential energy barrier of S0 ground-state isomerization.
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48

WEXLER, CARLOS, i ORION CIFTJA. "NOVEL LIQUID CRYSTALLINE PHASES IN QUANTUM HALL SYSTEMS". International Journal of Modern Physics B 20, nr 07 (20.03.2006): 747–78. http://dx.doi.org/10.1142/s0217979206033632.

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Since 1999, experiments have shown a plethora of surprising results in the low-temperature magnetotransport in intermediate regions between quantum Hall (QH) plateaus: the extreme anisotropies observed for half-filling, or the re-entrant integer QH effects at quarter filling of high Landau levels (LL); or even an apparent melting of a Wigner Crystal (WC) at filling factor ν = 1/7 of the lowest LL. A large body of seemingly distinct experimental evidence has been successfully interpreted in terms of liquid crystalline phases in the two-dimensional electron system (2DES). In this paper, we present a review of the physics of liquid crystalline states for strongly correlated two-dimensional electronic systems in the QH regime. We describe a semi-quantitative theory for the formation of QH smectics (stripes), their zero-temperature melting onto nematic phases and ultimate anisotropic-isotropic transition via the Kosterlitz–Thouless (KT) mechanism. We also describe theories for QH-like states with various liquid crystalline orders and their excitation spectrum. We argue that resulting picture of liquid crystalline states in partially filled LL-s is a valuable starting point to understand the present experimental findings, and to suggest new experiments that will lead to further elucidation of this intriguing system.
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Feng, Yexin, Ji Chen, Dario Alfè, Xin-Zheng Li i Enge Wang. "Nuclear quantum effects on the high pressure melting of dense lithium". Journal of Chemical Physics 142, nr 6 (14.02.2015): 064506. http://dx.doi.org/10.1063/1.4907752.

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Chen, Yong P., G. Sambandamurthy, Z. H. Wang, R. M. Lewis, L. W. Engel, D. C. Tsui, P. D. Ye, L. N. Pfeiffer i K. W. West. "Melting of a 2D quantum electron solid in high magnetic field". Nature Physics 2, nr 7 (4.06.2006): 452–55. http://dx.doi.org/10.1038/nphys322.

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