Measurements of thermoelectric power in two-dimensional systems

T. H H Vuong; R. J. Nicholas; M. A. Brummell; J. C. Portal; M. Razeghi; F. Alexandre; J. M. Masson; K. Y. Cheng; A. Y. Cho

doi:10.1016/0039-6028(86)90978-7

Measurements of thermoelectric power in two-dimensional systems

T. H H Vuong, R. J. Nicholas, M. A. Brummell, J. C. Portal, M. Razeghi, F. Alexandre, J. M. Masson, K. Y. Cheng, A. Y. Cho

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The diagonal component of the thermoelectric power in GaInAsInP, GaInAsAlInAs and GaAsGaAlAs heterojunctions and a GaAsGaAlAs superlattice has been studied as a function of magnetic field and temperature. In high magnetic fields, the thermopower shows oscillations proportional to the resistivity oscillations, including features due to spin splittings and the occupation of two electric subbands. The peak values of the thermopower in the GaAsGaAlAs superlattice are almost independent of temperature and close to the theoretical predictions. In contrast, the peak thermopowers measured in the heterojunctions are lower than predicted by factors of between 2 and 50, and decrease with increasing temperature.

Original language	English (US)
Pages (from-to)	298-303
Number of pages	6
Journal	Surface Science
Volume	170
Issue number	1-2
DOIs	https://doi.org/10.1016/0039-6028(86)90978-7
State	Published - Apr 3 1986

Funding

0039-6028/86/$03.50 © Elsevier Science Publishers B.V. (Nort a-Holland Physics Publishing Division) and Yamada Science Foundation

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(86)90978-7

Cite this

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title = "Measurements of thermoelectric power in two-dimensional systems",

abstract = "The diagonal component of the thermoelectric power in GaInAsInP, GaInAsAlInAs and GaAsGaAlAs heterojunctions and a GaAsGaAlAs superlattice has been studied as a function of magnetic field and temperature. In high magnetic fields, the thermopower shows oscillations proportional to the resistivity oscillations, including features due to spin splittings and the occupation of two electric subbands. The peak values of the thermopower in the GaAsGaAlAs superlattice are almost independent of temperature and close to the theoretical predictions. In contrast, the peak thermopowers measured in the heterojunctions are lower than predicted by factors of between 2 and 50, and decrease with increasing temperature.",

author = "Vuong, {T. H H} and Nicholas, {R. J.} and Brummell, {M. A.} and Portal, {J. C.} and M. Razeghi and F. Alexandre and Masson, {J. M.} and Cheng, {K. Y.} and Cho, {A. Y.}",

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doi = "10.1016/0039-6028(86)90978-7",

language = "English (US)",

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pages = "298--303",

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TY - JOUR

T1 - Measurements of thermoelectric power in two-dimensional systems

AU - Vuong, T. H H

AU - Nicholas, R. J.

AU - Brummell, M. A.

AU - Portal, J. C.

AU - Razeghi, M.

AU - Alexandre, F.

AU - Masson, J. M.

AU - Cheng, K. Y.

AU - Cho, A. Y.

PY - 1986/4/3

Y1 - 1986/4/3

N2 - The diagonal component of the thermoelectric power in GaInAsInP, GaInAsAlInAs and GaAsGaAlAs heterojunctions and a GaAsGaAlAs superlattice has been studied as a function of magnetic field and temperature. In high magnetic fields, the thermopower shows oscillations proportional to the resistivity oscillations, including features due to spin splittings and the occupation of two electric subbands. The peak values of the thermopower in the GaAsGaAlAs superlattice are almost independent of temperature and close to the theoretical predictions. In contrast, the peak thermopowers measured in the heterojunctions are lower than predicted by factors of between 2 and 50, and decrease with increasing temperature.

AB - The diagonal component of the thermoelectric power in GaInAsInP, GaInAsAlInAs and GaAsGaAlAs heterojunctions and a GaAsGaAlAs superlattice has been studied as a function of magnetic field and temperature. In high magnetic fields, the thermopower shows oscillations proportional to the resistivity oscillations, including features due to spin splittings and the occupation of two electric subbands. The peak values of the thermopower in the GaAsGaAlAs superlattice are almost independent of temperature and close to the theoretical predictions. In contrast, the peak thermopowers measured in the heterojunctions are lower than predicted by factors of between 2 and 50, and decrease with increasing temperature.

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VL - 170

SP - 298

EP - 303

JO - Surface Science

JF - Surface Science

IS - 1-2

ER -

Measurements of thermoelectric power in two-dimensional systems

Abstract

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