Volume 87, Number 4, August 2009
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||31 August 2009|
Violation of Onsager symmetry for a ballistic channel Coulomb coupled to a quantum ring
Faculty of Physics and Applied Computer Science, AGH University of Science and Technology al. Mickiewicza 30, 30-059 Kraków, Poland, EU
2 Departement Fysica, Universiteit Antwerpen - Groenenborgerlaan 171, B-2020 Antwerpen, Belgium, EU
Corresponding author: firstname.lastname@example.org
Accepted: 29 July 2009
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 Schrödinger 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.
PACS: 73.63.-b – Electronic transport in nanoscale materials and structures / 73.63.Nm – Quantum wires / 73.63.Kv – Quantum dots
© EPLA, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.