Friday, June 28, 2013

1306.6491 (Salil Bedkihal et al.)

Magnetic field symmetries of nonlinear transport with elastic and
inelastic scattering

Salil Bedkihal, Malay Bandyopadhyay, Dvira Segal
We expose a fundamental nonlinear electronic transport symmetry in spatially symmetric Aharonov-Bohm interferometers subjected to inelastic scattering effects, proving that its odd (even) conductance terms are even (odd) in the magnetic field. This observation does not hold when a spatial (left-right) asymmetry is introduced, as we show numerically. Under elastic dephasing effects, the Onsager-Casimir symmetry is maintained beyond linear response and under spatial asymmetries.
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