Volume 88, Number 4, November 2009
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||02 December 2009|
Magnetic-field asymmetry of nonlinear transport in a small ring
Instituto de Física da Universidade de São Paulo - CP 66318 CEP 05315-970, São Paulo, SP, Brazil
2 Institute of Semiconductor Physics - Novosibirsk 630090, Russia
Accepted: 5 November 2009
We have investigated the magnetic-field asymmetry of the conductance in the nonlinear regime in a small Aharonov-Bohm ring. We have found that the odd-in B and linear in V (the DC bias) correlation function of the differential conductance exhibits periodical oscillations with the Aharonov-Bohm flux. We have deduced the electron interaction constant and analyzed the phase rigidity of the Aharonov-Bohm oscillations in the nonlinear regime.
PACS: 73.23.-b – Electronic transport in mesoscopic systems / 73.63.-b – Electronic transport in nanoscale materials and structures
© EPLA, 2009
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