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

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


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 languageEnglish (US)
Pages (from-to)298-303
Number of pages6
JournalSurface Science
Issue number1-2
StatePublished - Apr 3 1986

ASJC Scopus subject areas

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


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