Observation of commensurability oscillations of thermopower in an antidot lattice

  • A. G. Pogosov
  • M. V. Budantsev
  • R. A. Lavrov
  • A. E. Plotnikov
  • A. K. Bakarov
  • A. I. Toropov
Condensed Matter

Abstract

Commensurability oscillations of thermopower in a square antidot lattice are observed. The oscillations are attributed to the geometrical resonances of the classical electron motion in a magnetic field and are much more pronounced than the corresponding magnetoresistance oscillations. The off-diagonal component of the thermopower tensor (the Nernst-Ettingshausen effect) changes sign at resonances. Additional measurements of magnetoresistance verify the correctness of the method used for thermopower measurements and provide information on the temperature distribution in the sample.

PACS numbers

73.23.Ad 73.50.Jt 73.50.Lw 

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Copyright information

© Pleiades Publishing, Inc. 2005

Authors and Affiliations

  • A. G. Pogosov
    • 1
  • M. V. Budantsev
    • 1
  • R. A. Lavrov
    • 1
  • A. E. Plotnikov
    • 1
  • A. K. Bakarov
    • 1
  • A. I. Toropov
    • 1
  1. 1.Institute of Semiconductor Physics, Siberian DivisionRussian Academy of SciencesNovosibirskRussia

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