Results 211 to 220 of about 15,243 (240)
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Thermopower of composite fermions
Physical Review B, 1995Measured diffusion thermopower of a low-disorder two-dimensional hole system in the extreme quantum limit is used to probe the thermal properties of the recently proposed particle-flux composite fermions (CF's). The data are consistent with the CF's exhibiting the integral quantum Hall effect away from filling factor nu=1/2.
, Bayot +4 more
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Journal of Magnetism and Magnetic Materials, 1985
Abstract We have measured for the first time the temperature dependence of the thermopower of cerium from 1.5 K up to room temperature, either under hydrostatic pressure or diluted with 10% Th. The results show that cerium is nearly trivalent in both α and γ phases, in good agreement with other recent results.
C. Fierz, M. Decroux, J. Sierro
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Abstract We have measured for the first time the temperature dependence of the thermopower of cerium from 1.5 K up to room temperature, either under hydrostatic pressure or diluted with 10% Th. The results show that cerium is nearly trivalent in both α and γ phases, in good agreement with other recent results.
C. Fierz, M. Decroux, J. Sierro
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Physics Letters A, 1990
Abstract The thermopower has been measured on five polycrystalline samples of CeSi x with x =2.00, 1.90, 1.85, 1.80 and 1.70 and is discussed in connection with the change of the Ce(4f) electron state. The data of the thermopower was reproducible in repeated measurements and reliable, although good data of the electric resistivity was difficult
J. Sakurai, Y. Murashita
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Abstract The thermopower has been measured on five polycrystalline samples of CeSi x with x =2.00, 1.90, 1.85, 1.80 and 1.70 and is discussed in connection with the change of the Ce(4f) electron state. The data of the thermopower was reproducible in repeated measurements and reliable, although good data of the electric resistivity was difficult
J. Sakurai, Y. Murashita
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Observation of universal thermopower fluctuations
Physical Review Letters, 1990We have measured the thermopower of small ${\mathit{n}}^{+}$-GaAs wires using a novel electron heating technique. The results show very large fluctuations which are in good agreement with existing theories. We believe this to be the first observation of universal thermopower fluctuations.
, Gallagher +6 more
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The Thermopower in Bismuth Whiskers
Physica Status Solidi (a), 1979The temperature dependence of the thermopower in Bi whiskers of different thickness (0.3 to 6 μm) is measured within the temperature range 77 to 300 K. At low temperatures the thermopower in the thinnest whiskers changes its sign and becomes positive.
P. P. Bodíul +4 more
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Thermopower in Scanning Tunneling Microscope Experiments
Physical Review B, 1990Recently Williams and Wickramasinghe (1990a) have measured thermopower on the atomic scale by using different tip and sample temperatures in a scanning tunneling microscope (STM).
, Stovneng, , Lipavsk
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Seebeck Coefficient (Thermopower)
2007Based on the idea that different temperatures generate different carrier densities and the resulting carrier diffusion causes the thermal electromotive force (emf), a new formula for the Seebeck coefficient (thermopower) S is obtained: \(S = (2\ln{2} /3)(qn)^{-1}\epsilon_{F}k_{B}({\cal N}_{0}/V)\), where q, n, \(\epsilon_{F}\), \({\cal N}_{0}\), and V ...
Shigeji Fujita, Kei Ito
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Thermopower of the superconducting cuprates
Physical Review B, 1995The normal-state thermoelectric power of the high-{ital T}{sub {ital c}} superconducting cuprates shows a systematic but unusual dependence on temperature and on the concentration of holes in the CuO{sub 2} planes. In this paper it is shown that the observed pattern is predicted within a conventional Fermi-liquid picture and follows from the ...
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