Magnetic-field asymmetry of nonlinear transport in a small ringG. M. Gusev1, Z. D. Kvon1, E. B. Olshanetsky2 and A. Y. Plotnikov2
1 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
received 23 August 2009; accepted in final form 5 November 2009; published November 2009
published online 2 December 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.
73.23.-b - Electronic transport in mesoscopic systems.
73.63.-b - Electronic transport in nanoscale materials and structures.
© EPLA 2009