Magnetic field symmetry properties of the capacitance tensor of a two-dimensional electron system

W. Chen, T. P. Smith, M. Büttiker, Mansour Shayegan

Research output: Contribution to journalArticle

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Abstract

Large, almost complete, asymmetry in the capacitance tensor elements is observed under field reversal in a 2D electron system with a multilead measurement configuration. In our high mobility electron gas the saturation field for this asymmetry is typically less than 0.05 T at T<4 K. The measured magnetic field symmetries are consistent with a recent theoretical discussion of capacitance by Büttiker and are in accordance with the Onsager-Casimir symmetry requirements. In multilead structures capacitance coefficients which are uneven under magnetic field reversal are possible since the Coulomb interaction couples a partial density of states instead of the full equilibrium density of states.

Original languageEnglish (US)
Pages (from-to)146-149
Number of pages4
JournalPhysical Review Letters
Volume73
Issue number1
DOIs
StatePublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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