Control of the non-stationary spin-polarized tunneling currents by applied bias changing
arXiv:1607.04160 · doi:10.1016/j.ssc.2016.09.003
Abstract
We reveal that for the single Anderson impurity localized between non-magnetic leads of the tunneling contact magnetic state can be distinguished from the paramagnetic one only by the analysis of the non-stationary system characteristics or the behavior of the second order correlation functions for the localized electrons occupation numbers. We investigate the response of the system to the sudden shift of the applied bias and to the switching on the coupling to the second lead of the tunneling contact. We demonstrate that in addition to the changes of the relaxation regimes and typical relaxation time scales, non-stationary spin-polarized currents flowing in the both leads are present in the system. Spin polarization and direction of the non-stationary currents in each lead can be simultaneously inverted by the sudden changing of the applied bias voltage.
arXiv comment9 pages, 9 figures. arXiv admin note: text overlap with arXiv:1606.08975
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- Universal power law decay of spin polarization in double quantum dot
- Kondo correlations formation and the local magnetic moment dynamics in the Anderson model
- Kinetics of local magnetic moment and non-stationary spin-polarized current in the single impurity Anderson-model
- Non-stationary spin-filtering effects in correlated quantum dot