Violation of Onsager symmetry for a ballistic channel Coulomb coupled to a quantum ring

Details Violation of Onsager symmetry for a ballistic channel Coulomb coupled to a quantum ring Violation of Onsager symmetry for a ballistic channel Coulomb coupled to a quantum ring

2009-07-17

arxiv.org/abs/0907.3003v1

EPL 87, 47002 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

submitted to EPL

Scientific paper

10.1209/0295-5075/87/47002

We investigate a scattering of electron which is injected individually into an empty ballistic channel containing a cavity that is Coulomb coupled to a quantum ring charged with a single-electron. We solve the time-dependent Schr\"odinger equation for the electron pair with an exact account for the electron-electron correlation. Absorption of energy and angular momentum by the quantum ring is not an even function of the external magnetic field. As a consequence we find that the electron backscattering probability is asymmetric in the magnetic field and thus violates Onsager symmetry.

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