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| VOLUME 108 (2018) | ISSUE 7 | PAGE 520 |
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Non-stationary spin-polarized currents tuning in correlated quantum dot
V. N. Mantsevich+, N. S. Maslova* P. I. Arseyev×°
+Chair of Semiconductors and Quantum Center, Faculty of Physics, Moscow State University, 119991 Moscow, Russia *Chair of Quantum Electronics and Quantum Center, Faculty of Physics, Moscow State University, 119991 Moscow, Russia ×P.N. Lebedev Physical institute of Russian Academy of Sciences, 119991 Moscow, Russia °Russia National Research University Higher School of Economics, 101000 Moscow, Russia
Abstract
We analyzed the influence of applied bias changing and external magnetic field switching on the non-stationary spin-polarized currents behavior in the correlated single-level quantum dot coupled to the non-magnetic leads. It was demonstrated that spin polarization and direction of the non-stationary currents could be changed to the opposite ones by applied bias voltage. The degree of the currents spin polarization changes the sign following the applied bias polarity. The possibility of spin-polarized train pulses generation with the opposite degree of polarization was revealed. Moreover, the presence of external magnetic field allows to consider correlated single-level quantum dot as an effective non-stationary spin filter. |