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 language | English (US) |
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Pages (from-to) | 146-149 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 73 |
Issue number | 1 |
DOIs | |
State | Published - 1994 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy