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Artykuły w czasopismach na temat „Thermopower”

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Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 7 września 2023

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1

Kaiser, AB, AL Christie i BL Gallagher. "Investigation of the Interaction of Electrons and Lattice Vibrations Using Glassy Metal Thermopower". Australian Journal of Physics 39, nr 6 (1986): 909. http://dx.doi.org/10.1071/ph860909.

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We calculate the electron-phonon enhancement effect in thermopower using several different models for the Eliashberg function a2 F(E) which describes the interaction of electrons and lattice vibrations. The behaviour of a 2 F(E) at low energies determines whether the predicted thermopower enhancement shows a peak at low temperatures, but the enhancement is rather insensitive to the detailed spectral shape of a2 F(E) at higher energies. The calculations are able to give a good account of the thermopowers of several glassy metals measured by Gallagher and Hickey (1985), with slightly better agreement obtained for a smooth rather than a Debye-like a2 F(E).
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2

GULIYEV, BAHSHELI, i GENBER KERIMLI. "THE THERMOPOWER IN SEMICONDUCTING THIN FILMS WITH NONPARABOLIC ENERGY BAND". Modern Physics Letters B 26, nr 30 (22.10.2012): 1250198. http://dx.doi.org/10.1142/s0217984912501989.

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In the present work, the in-plane electron thermopower of semiconducting size-quantized films with nonparabolic energy band in a classically strong magnetic field, which is parallel to the film normal, are investigated. It was shown that, for the degenerate electron gas thermopower is a function of film thickness and electron density: for arbitrary thickness thermopower is oscillating function, with the period as a function of concentration, but with respect to concentration thermopower is monotonically increasing function. It is shown that in the case of ultrathin films (quantum wells) thermopower increases, as thickness decreases. This result is in agreement with the experimental dates on GaAs quantum wells.
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3

SINGH, DAVID J. "THERMOPOWER OF SnTe FROM BOLTZMANN TRANSPORT CALCULATIONS". Functional Materials Letters 03, nr 04 (grudzień 2010): 223–26. http://dx.doi.org/10.1142/s1793604710001299.

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The doping and temperature dependent thermopower of SnTe is calculated from the first principles band structure using Boltzmann transport theory. We find that the p-type thermopower is inferior to PbTe consistent with experimental observations, but that the n-type thermopower is substantially more favorable.
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4

Abrahamson, Joel T., Bernat Sempere, Michael P. Walsh, Jared M. Forman, Fatih Şen, Selda Şen, Sayalee G. Mahajan i in. "Excess Thermopower and the Theory of Thermopower Waves". ACS Nano 7, nr 8 (7.08.2013): 6533–44. http://dx.doi.org/10.1021/nn402411k.

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5

Amato, A., D. Jaccard, J. Sierro, F. Lapierre, P. Haen, P. Lejay i J. Flouquet. "Thermopower and magneto-thermopower of CeRu2Si2 single crystals". Journal of Magnetism and Magnetic Materials 76-77 (grudzień 1988): 263–64. http://dx.doi.org/10.1016/0304-8853(88)90389-7.

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6

LIN, SHU-YUAN, LI LU, HONG-MIN DUAN, BEI-HAI MA i DIAN-LIN ZHANG. "THERMOPOWER ANISOTROPY OF YBa2Cu3O7−δ SINGLE CRYSTALS". International Journal of Modern Physics B 03, nr 03 (marzec 1989): 409–13. http://dx.doi.org/10.1142/s0217979289000300.

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The thermopower of YBa 2 Cu 3 O 7−δ single crystals has been measured from 300 K down to superconducting transition temperature. Strong anisotropy was observed. While the thermopower along ab-plane slightly increased with decreasing temperature, reaching 5 ~ 8 μ V/K around 120 K, the thermopower along c-axis showed typical metallic behavior with room temperature value as large as ~ 30 μ V/K .
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7

Koroleva, Luidmila, Ivan Batashev, Artem Morozov, Anatolii Balbashov, Henryk Szymczak i Anna Slavska-Wanniewska. "Connection of thermopower, magnetothermopower with resistivity and magnetoresistance in manganites with Nd and Sm". EPJ Web of Conferences 185 (2018): 06014. http://dx.doi.org/10.1051/epjconf/201818506014.

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Thermopower, magnetothermopower resistivity and magnetoresistance of single crystal samples Re(1-x)SrxMnO3 (0 ≤ x ≤ 0.3, Re = Nd, Sm) were studied in wide temperature interval, included the Curie temperature TC. Giant maxima of resistivity and thermopower, very big negative magnetothermopower and magnetoresistance were found in TC region. So, a giant maximum of thermopower in TC was found, which suppressed by magnetic field. Simultaneous magnetic field destroys magneto-impurity states – ferrons as evidenced the maxima resistivity and magnetoresistance in TC Hence it follows that giant thermopower in manganites are produced by ferrons and its value is set by the quantity of impurities, that is the concentration of impurities and the volume of sample.
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8

Kang, Min-Sung, Soo-Young Kang, Won-Yong Lee, No-Won Park, Ki Chang Kown, Seokhoon Choi, Gil-Sung Kim i in. "Large-scale MoS2 thin films with a chemically formed holey structure for enhanced Seebeck thermopower and their anisotropic properties". Journal of Materials Chemistry A 8, nr 17 (2020): 8669–77. http://dx.doi.org/10.1039/d0ta02629h.

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9

Chabinyc, Michael. "Behind organics' thermopower". Nature Materials 13, nr 2 (23.01.2014): 119–21. http://dx.doi.org/10.1038/nmat3859.

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10

Shu-yuan, Lin, Lu Li, Zhang Dian-lin, H. M. Duan, William Kiehl i A. M. Hermann. "Thermopower ofTl2Ba2CuO6single crystals". Physical Review B 47, nr 13 (1.04.1993): 8324–26. http://dx.doi.org/10.1103/physrevb.47.8324.

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11

Fierz, C., M. Decroux i J. Sierro. "Thermopower of cerium". Journal of Magnetism and Magnetic Materials 47-48 (luty 1985): 517–20. http://dx.doi.org/10.1016/0304-8853(85)90481-0.

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12

Sakurai, J., i Y. Murashita. "Thermopower of CeSix". Physics Letters A 150, nr 2 (październik 1990): 113–16. http://dx.doi.org/10.1016/0375-9601(90)90260-u.

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13

Jamali, M. F., H. Rahimpour Soleimani i M. Bagheri Tagani. "The effect of adding side group and changing contact geometry in single pyrene molecular devices". International Journal of Modern Physics B 32, nr 07 (5.03.2018): 1850078. http://dx.doi.org/10.1142/s0217979218500789.

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In this study, the thermopower of pyrene molecule in both symmetric and asymmetric junctions to gold electrodes and the role of adding side group have been studied using density functional theory and Green’s function formalism in the linear response regime. We have considered four different configurations and investigated the thermopower property of them. Calculations show that adding electron donating side groups to both symmetrical and anti-symmetrical junction will increase the thermopower. However, the increase is more evident in asymmetric junction. Additionally, the Seebeck coefficient sign is positive which indicates p-type conduction.
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14

WANG, JIANMING, LANGHUI WAN, YADONG WEI, YANXIA XING i JIAN WANG. "NONLINEAR THERMOELECTRIC TRANSPORT THROUGH A DOUBLE BARRIER STRUCTURE". Modern Physics Letters B 20, nr 05 (20.02.2006): 215–23. http://dx.doi.org/10.1142/s0217984906009554.

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We present a theoretical analysis of thermoelectric transport in the nonlinear regime. The thermopower and thermoconductance at finite temperature gradient are calculated numerically for a double barrier structure using Landauer Büttiker like formula. The thermopower is found to oscillate with the chemical potential. Thermopower can either be negative or positive which is well correlated with the behavior of the electric conductance. The thermal conductance is positive definite showing that the heat energy is always transferred from hot end to cold end. As the chemical potential is varied, nonlinear thermal conductance exists plateau-like features.
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15

Droghetti, Andrea, i Ivan Rungger. "Enhanced thermopower in covalent graphite–molecule contacts". Physical Chemistry Chemical Physics 22, nr 3 (2020): 1466–74. http://dx.doi.org/10.1039/c9cp05474j.

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The conversion of heat into electricity is determined by the thermopower. We show that the thermopower of junctions with molecules bonded to graphite can be very large and we then suggest new platforms for molecular-scale thermoelectric devices.
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16

Nakano, Akitoshi, Urara Maruoka i Ichiro Terasaki. "Correlation between thermopower and carrier mobility in the thermoelectric semimetal Ta2PdSe6". Applied Physics Letters 121, nr 15 (10.10.2022): 153903. http://dx.doi.org/10.1063/5.0102434.

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We have investigated the transport properties of single crystals of a thermoelectric semimetal Ta2PdSe6 and its niobium-substituted (Ta1−xNbx)2PdSe6 by means of resistivity, thermopower, and Hall resistivity measurements. The residual resistivity ratio systematically decreases by the Nb-substitution, indicating enhanced impurity scattering. The slope and peak-top value of thermopower also systematically decrease upon increasing x. We have analyzed the set of transport data by using a two-carrier model, then revealed strong correlation between the thermopower and carrier mobility in the titled compound. We propose that controlling carrier mobility is a possible route to achieve a high-performance thermoelectric semimetal.
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17

Иванов, Ю. В., i О. Н. Урюпин. "Термоэдс латтинжеровской жидкости". Физика и техника полупроводников 53, nr 5 (2019): 648. http://dx.doi.org/10.21883/ftp.2019.05.47556.14.

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The thermopower of a Luttinger liquid with a potential barrier is calculated. The long-range nature of the electron-electron interaction is taken into account. It is shown that an increase of the interaction range qualitatively changes the temperature dependence of the thermopower. At low temperatures, the Seebeck coefficient of the Luttinger liquid is significantly less than the corresponding coefficient of a one-dimensional Fermi gas. With increasing temperature, the thermopower increases rapidly and may exceed that of the Fermi gas. The results obtained are in qualitative agreement with experimental data for quasi-one-dimensional 5-nm-thick InSb wires.
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18

Wu, Phillip M., Waldomiro Paschoal, Sandeep Kumar, Christian Borschel, Carsten Ronning, Carlo M. Canali, Lars Samuelson, Håkan Pettersson i Heiner Linke. "Thermoelectric Characterization of Electronic Properties of GaMnAs Nanowires". Journal of Nanotechnology 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/480813.

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Nanowires with magnetic doping centers are an exciting candidate for the study of spin physics and proof-of-principle spintronics devices. The required heavy doping can be expected to have a significant impact on the nanowires' electron transport properties. Here, we use thermopower and conductance measurements for transport characterization of Ga0.95Mn0.05As nanowires over a broad temperature range. We determine the carrier type (holes) and concentration and find a sharp increase of the thermopower below temperatures of 120 K that can be qualitatively described by a hopping conduction model. However, the unusually large thermopower suggests that additional mechanisms must be considered as well.
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19

Sonntag, Joachim. "Comment on “Effective medium theory based modeling of the thermoelectric properties of composites: comparison between predictions and experiments in the glass–crystal composite system Si10As15Te75–Bi0.4Sb1.6Te3” by J.-B. Vaney et al., J. Mater. Chem. C, 2015, 3, 11090". Journal of Materials Chemistry C 4, nr 46 (2016): 10973–76. http://dx.doi.org/10.1039/c6tc03140d.

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Vaney et al. found that the thermopower formula for composites derived in ref. 2 clearly fails to predict the thermopower of Si10As15Te75–Bi0.4Sb1.6Te3.
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20

LESOVICK, G. B. "THERMOPOWER IN BALLISTIC 2D MICROJUNCTION WITH QUANTIZED RESISTANCE". Modern Physics Letters B 03, nr 08 (20.05.1989): 611–13. http://dx.doi.org/10.1142/s0217984989000960.

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It is shown that thermopower, under condition of good quantization of conductance (in units of e2/h), could be of the order of kB/e. When the temperature difference between opposite sides of a microjunction is finite, thermopower becomes nonlinear. This phenomenon is connected with energy dependence of conductance.
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21

HINZ, ALEKSANDER P., STEFAN KETTEMANN i EDUARDO R. MUCCIOLO. "ANALYSIS OF QUANTUM CORRECTIONS TO CONDUCTIVITY AND THERMOPOWER IN GRAPHENE — NUMERICAL AND ANALYTICAL APPROACHES". International Journal of Modern Physics: Conference Series 11 (styczeń 2012): 170–76. http://dx.doi.org/10.1142/s2010194512006083.

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We present numerical and analytical studies of the crossover between weak antilocalization and weak localization in monolayer graphene and their influence on thermopower. By the use of the recursive Green's function method, we find that these quantum corrections result in an enhancement of thermopower, which can be observed in the resulting magnetic field dependence. This magneto thermopower strongly depends on the size and strength of the impurities as well as on the back gate voltage of the system and the impurity concentration. We show in detail the crossover of these localization effects with these parameters. Using the disorder parameters of the numerical calculation, we find quantitative agreement with the analytical calculations.
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22

GALOYAN, N. A., i A. M. GULIAN. "THERMOELECTRIC POWER OF SUPERCONDUCTORS IN CONDITIONS OF OPTICALLY INDUCED BRANCH IMBALANCE". Modern Physics Letters B 08, nr 08n09 (20.04.1994): 509–15. http://dx.doi.org/10.1142/s0217984994000546.

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Linear response of a superconductor on a temperature gradient is considered assuming an imbalance between electron and hole populations. Nonequilibrium contribution to thermopower is derived for gapless superconductors in a universal form. As a specific example for finite-gap superconductors, a thermopower under the influence of electromagnetic radiation is calculated.
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23

Chatterjee, Arindom, Alexandros El Sachat, Ananya Banik, Kanishka Biswas, Alejandro Castro-Alvarez, Clivia M. Sotomayor Torres, José Santiso i Emigdio Chávez-Ángel. "Improved High Temperature Thermoelectric Properties in Misfit Ca3Co4O9 by Thermal Annealing". Energies 16, nr 13 (4.07.2023): 5162. http://dx.doi.org/10.3390/en16135162.

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Ca3Co4O9, a p-type thermoelectric material based on transition-metal oxides, has garnered significant interest due to its potential in thermoelectric applications. Its unique misfit-layered crystal structure contributes to low thermal conductivity and a high Seebeck coefficient, leading to a thermoelectric figure of merit (zT) of ≥1 at 1000 K. Conventionally, it has been believed that thermopower reaches its upper limit above 200 K. However, our thermopower measurements on polycrystalline Ca3Co4O9 samples have revealed an unexpected increase in thermopower above 380 K. In this study, we investigate the effects of high oxygen pressure annealing on Ca3Co4O9 and provide an explanation based on the mixed oxide states of cobalt and carrier hopping. Our results demonstrate that annealing induces modifications in the defect chemistry of Ca3Co4O9, leading to a decrease in electron hopping probability and the emergence of a thermal activation-like behavior in thermopower. These findings carry significant implications for the design and optimization of thermoelectric materials based on misfit cobaltates, opening new avenues for enhanced thermoelectric performance.
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24

BASAK, S., I. CHAUDHURI i S. K. GHATAK. "EFFECT OF STRAIN ON THE TRANSPORT PROPERTIES OF THE MANGANITE". International Journal of Modern Physics B 15, nr 27 (30.10.2001): 3551–58. http://dx.doi.org/10.1142/s021797920100735x.

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The effect of strain on the resistivity and thermopower of ferromagnetic manganites has been examined based on the model that incorporates the electron-lattice interaction through the Jahn–Teller effect and an effective hopping determined by nearest neighbor spin–spin correlation of t2g electrons. The metal insulator transition temperature associated with resistivity decreases with increase in strain. In the presence of large strain the system remains in the semiconducting state. Thermopower (S) is positive and increasing function of strain and it exhibits a maximum with temperature. The temperature where maximum of S appears, shifts towards higher (lower) value in the presence of magnetic field (strain). A large magneto-thermopower that depends on strain is obtained around metal–insulator transition.
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25

Shen, Lanlan, Mengting Liu, Peipei Liu, Jingkun Xu, Na Li, Zhiliang Wan, Zhihong Chen i in. "A lamellar-ordered poly[bi(3,4-ethylenedioxythiophene)-alt-thienyl] for efficient tuning of thermopower without degenerated conductivity". Soft Science 3, nr 2 (2023): 20. http://dx.doi.org/10.20517/ss.2023.10.

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Modulating the structural order of conjugated polymers has emerged as a significant approach to enhance the organic thermoelectric performance. Among these materials, poly(3,4-ethylenedioxythiophene) is considered a promising candidate due to its high conductivity. However, its low thermopower remains a major obstacle to further improve its performance as an organic thermoelectric material. To address this issue, a series of thiophene derivatives with high rigidity and containing dioxyethylene groups were synthesized, and polymer films were prepared through a simple and mild in-situ polymerization method. The polymer molecule containing a thiophene block, named poly[bi(3,4-ethylenedioxy)-alt-thienyl] , exhibits significant self-rigidification due to non-covalent interactions between oxygen and sulfur atoms, resulting in highly ordered assembly. By adding thiophene and thieno[3,2-b]thiophene structures to the intermediate precursor bi(3,4-ethylenedioxy), the 3,4-ethylenedioxy content in the polymer molecule is altered, leading to an almost four-fold increase in the thermopower of the thin film polymer and achieving a maximum thermopower of around 26 μV·K-1. Although poly[bi(3,4-ethylenedioxy)-alt-thienyl] shows a significant increase in thermopower compared to poly[bi(3,4-ethylenedioxy)], the thin film conductivity exhibits a nearly imperceptible decreasing trend due to its highly ordered microstructure. This work highlights the potential to control the aggregation state of polymer molecules and achieve an approximate decoupling between the conductivity and thermopower of thermoelectric materials by rationally designing polymer molecules.
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26

Alisultanov, Z. Z. "Large and tunable thermoelectric effect in single layer graphene on bilayer graphene". Modern Physics Letters B 29, nr 03 (30.01.2015): 1550003. http://dx.doi.org/10.1142/s0217984915500037.

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The conductivity and thermopower of a trilayer graphene based system have been studied within the framework of a simple model. It has been shown that kinks of the conductivity and peaks of the thermopower of the monolayer graphene formed on a tunable bilayer graphene appear near the edges of the band gap of the tunable bilayer graphene.
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27

Nemnes, G. A., Camelia Visan, T. L. Mitran, Adela Nicolaev, L. Ion i S. Antohe. "Enhanced thermopower of GaN nanowires with transitional metal impurities". MRS Proceedings 1543 (2013): 125–29. http://dx.doi.org/10.1557/opl.2013.988.

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ABSTRACTThe thermopower properties of GaN nanowires with transitional metal impurities are investigated in the framework of constrained spin density functional theory (DFT) calculations. The nanowires are connected to nanoscopic Al[111] electrodes, which ensure a natural coupling to the wurtzite structure of the nanowires. We investigate the thermoelectric properties comparatively for the pristine GaN nanowire and the system with one Mn adatom. Our study points out the predicted qualitative behavior for systems with a peak in the total transmission, as well as the sign change in the thermopower. For the system with the magnetic impurity we find an enhanced conductance, thermopower and figure of merit. The detectable spin current polarization suggests the device structure may be also used in low temperature sensing applications.
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28

Shi, Xun, i Jian He. "Thermopower and harvesting heat". Science 371, nr 6527 (21.01.2021): 343–44. http://dx.doi.org/10.1126/science.abf3342.

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29

Moos, Ralf, Alain Gnudi i Karl Heinz Härdtl. "Thermopower of Sr1−xLaxTiO3ceramics". Journal of Applied Physics 78, nr 8 (15.10.1995): 5042–47. http://dx.doi.org/10.1063/1.359731.

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30

Koshibae, W., K. Tsutsui i S. Maekawa. "Thermopower in cobalt oxides". Physical Review B 62, nr 11 (15.09.2000): 6869–72. http://dx.doi.org/10.1103/physrevb.62.6869.

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31

Vining, Cronin B. "Thermopower to the people". Nature 423, nr 6938 (22.05.2003): 391–92. http://dx.doi.org/10.1038/423391a.

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32

Yamada, Shigeki, Taka-hisa Arima, Hiroshi Ikeda i Kôki Takita. "Thermopower in Pr1-xCaxMnO3". Journal of the Physical Society of Japan 69, nr 5 (15.05.2000): 1278–81. http://dx.doi.org/10.1143/jpsj.69.1278.

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33

Rafael, C., R. Fletcher, P. T. Coleridge, Y. Feng i Z. R. Wasilewski. "Thermopower and weak localization". Semiconductor Science and Technology 19, nr 11 (23.09.2004): 1291–99. http://dx.doi.org/10.1088/0268-1242/19/11/014.

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34

Virtanen, Pauli, i Tero T. Heikkilä. "Thermopower in Andrew Interferometers". Journal of Low Temperature Physics 136, nr 5/6 (wrzesień 2004): 401–34. http://dx.doi.org/10.1023/b:jolt.0000041275.16029.66.

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35

Bayot, V., E. Grivei, H. C. Manoharan, X. Ying i M. Shayegan. "Thermopower of composite fermions". Physical Review B 52, nr 12 (15.09.1995): R8621—R8624. http://dx.doi.org/10.1103/physrevb.52.r8621.

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36

Buhmann, H., i L. W. Molenkamp. "Thermopower of quantum chaos". Physica E: Low-dimensional Systems and Nanostructures 6, nr 1-4 (luty 2000): 400–403. http://dx.doi.org/10.1016/s1386-9477(99)00207-6.

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37

Agbenyega, Jonathan. "Thermopower has more energy". Materials Today 13, nr 4 (kwiecień 2010): 13. http://dx.doi.org/10.1016/s1369-7021(10)70053-5.

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38

Choi, Mu-Yong, i J. S. Kim. "Thermopower of high-Tccuprates". Physical Review B 59, nr 1 (1.01.1999): 192–94. http://dx.doi.org/10.1103/physrevb.59.192.

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39

Matzui, Ludmila, Ludmila Vovchenko i Irina Ovsienko. "Thermopower of Pregraphitic Carbons". Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 340, nr 1 (marzec 2000): 361–66. http://dx.doi.org/10.1080/10587250008025493.

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40

Vaidya, R. G., M. D. Kamatagi, N. S. Sankeshwar i B. G. Mulimani. "Diffusion thermopower in graphene". Semiconductor Science and Technology 25, nr 9 (5.08.2010): 092001. http://dx.doi.org/10.1088/0268-1242/25/9/092001.

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41

Yoo, H. I., M. W. Barsoum i T. El-Raghy. "Ti3SiC2 has negligible thermopower". Nature 407, nr 6804 (październik 2000): 581–82. http://dx.doi.org/10.1038/35036686.

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42

Ma, Hong, Guangcheng Xiong, Lin Wang, Shouzheng Wang, Hong Zhang, Litai Tong, Suichen Liang i Shousheng Yan. "Thermopower in epitaxialYBa2Cu3O7thin films". Physical Review B 40, nr 13 (1.11.1989): 9374–77. http://dx.doi.org/10.1103/physrevb.40.9374.

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43

Kang, W. N., i Mu-Yong Choi. "Negative thermopower ofYbBa2Cu3O7−y". Physical Review B 42, nr 4 (1.08.1990): 2573–75. http://dx.doi.org/10.1103/physrevb.42.2573.

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44

Varoy, C. R., H. J. Trodahl, R. G. Buckley i A. B. Kaiser. "Thermopower ofBi2−xPbxSr2CaCu2O8+δ". Physical Review B 46, nr 1 (1.07.1992): 463–68. http://dx.doi.org/10.1103/physrevb.46.463.

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45

Bodurtha, Kent E., i J. Kakalios. "Charge transport in nanocrystalline germanium/hydrogenated amorphous silicon mixed-phase thin films". MRS Proceedings 1536 (2013): 195–200. http://dx.doi.org/10.1557/opl.2013.598.

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ABSTRACTMixed phase thin films consisting of hydrogenated amorphous silicon (a-Si:H) in which germanium nanocrystals (nc-Ge) are embedded have been synthesized using a dual-chamber co-deposition system. Raman spectroscopy and x-ray diffraction measurements confirm the presence of 4 - 4.5 nm diameter nc-Ge homogenously embedded within the a-Si:H matrix. The conductivity and thermopower are studied as the germanium crystal fraction XGe is systematically increased. For XGe < 10%, the thermopower is n-type (as in undoped a-Si:H) while for XGe > 25% p-type transport is observed. For films with 10 < XGe < 25% the thermopower shifts from p-type to n-type as the temperature is increased. This transition is faster than expected from a standard two-channel model for charge transport.
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46

Boonmeethongyoo, Nattayaporn, i Tosawat Seetawan. "Thermopower of Sr1-xLaxMnO3 (x = 0.1-1.0)". Advanced Materials Research 770 (wrzesień 2013): 343–45. http://dx.doi.org/10.4028/www.scientific.net/amr.770.343.

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The polycrystalline of Sr1xLaxMnO3 (x = 0.11.0) samples were synthesized by solid state reaction method and general sintering. The Sr1xLaxMnO3 powders were calcined and sintered by furnace at 900 K and 1173 K for 3 hours in air atmosphere, respectively. Thermopower of the samples were measured by steady state method at temperature range of 290-520 K in air. The thermopower all samples were increased with increasing the La content substitution.
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Gao, Wei, Haofei Meng, Yongping Chen i Xiangdong Liu. "Quasi-solid n-type thermogalvanic thermocells with enhanced ionic conductivity for continuous low-grade heat harvesting". Applied Physics Letters 121, nr 20 (14.11.2022): 203902. http://dx.doi.org/10.1063/5.0120728.

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Quasi-solid thermocells show great potential to save power terminals from periodic charging but still face the grand challenge of low thermoelectric efficiency. Despite many efforts devoted to improve thermopower, few studies have been reported to address the trade-off between thermopower and ionic conductivity encountered by n-type quasi-solid thermocells. Herein, a directional freeze-thawing method is developed to fabricate high-performance n-type quasi-solid thermocells with hierarchically anisotropic networks, enabling the decoupling of thermopower and ionic conductivity. The n-type thermopower is up to 0.74 mV/K, and the ionic conductivity is independently improved to be about 9.3 S/m. Thus, the output power density reaches ∼200 mW/m2, which is the same level among the quasi-solid n-type thermocells. Meanwhile, benefiting from the crystalline domains and alignment structures of the solid network, the thermocells achieve the strength of ∼380 kPa and an elongation at break of ∼320%. Moreover, the thermocells work stably when being pressed, bent, and stretched in practical uses. We believe this work not only demonstrates a particularly important example for fabricating high-performance n-type quasi-solid thermocells but also inspires the development of thermocell devices to achieve large-scale low-grade heat harvesting in wearable systems.
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Davydov, V. N. "Some peculiarities of thermopower at the Lifshitz topological transitions due to stacking change in bilayer and multilayer graphene". Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 475, nr 2226 (czerwiec 2019): 20190028. http://dx.doi.org/10.1098/rspa.2019.0028.

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Singularities of thermopower (the Seebeck coefficient) are considered at the Lifshitz topological transitions (LTT) in bilayer graphene (BLG) and multilayer graphene (MLG) due to stacking change from AB to AA . The dependence of singularities on μ , γ 1 and Δ is investigated ( μ is the chemical potential, γ 1 is the interlayer hopping parameter and Δ is the gap value) for the gapped graphene, as well as for the gapless one. The present paper results indicate that effects of the thermopower singularities are appreciable and can be used to observe the LTT, and to explore the degree of stacking change from AB to AA in graphene. Therefore, the thermopower singularities at LTT due to stacking change from AB to AA can be used as a powerful tool to control electronic properties of BLG- and MLG-based structures.
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Brodowsky, Horst, Qiyuan Chen, Zhongliang Xiao i Zhoulan Yin. "The absolute thermoelectric power of Nb–Mo alloys". International Journal of Materials Research 95, nr 8 (1.08.2004): 698–703. http://dx.doi.org/10.1515/ijmr-2004-0129.

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Abstract After Onsager the thermopower of a material is related to the ratio either of two transport coefficients or of the gradients of the electrochemical potential of the electrons and the temperature. In metals the potential is a unique function of the temperature and this ratio can be replaced by the differential quotient, a function obtainable from the density of states of the metal as illustrated on a thermopower isotherm of Nb–Mo alloys.
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IZADI, SAHAR, i H. RAHIMPOUR SOLEIMANI. "THERMOELECTRIC AND THERMOMAGNETIC PROPERTIES OF GRAPHENE IN THE PRESENCE OF DIFFERENT SCATTERING PROCESSES". Modern Physics Letters B 27, nr 09 (15.03.2013): 1350060. http://dx.doi.org/10.1142/s0217984913500607.

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Thermoelectric and thermomagnetic properties of graphene are analyzed using Boltzmann transport equation within the relaxation time approximation. Influence of temperature, charge carrier density and magnetic field on the thermopower and figure of merit is taken into account in the presence of different scattering processes. It is observed the magnetic field results in the increase of thermopower and figure of merit in the acoustical phonon scattering process, while they are reduced by charged impurity scattering.
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