Spin-polarized transport through a coupled double-dot |
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Authors: | Hui?Yu Email author" target="_blank">J-Q?LiangEmail author |
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Institution: | (1) Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi, 030006, China |
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Abstract: | We investigate the quantum transport through a mesoscopic device consisting
of an open, lateral double-quantum-dot coupled by time oscillating and
spin-polarization dependent tunneling which results from a static magnetic
field applied in the tunneling junction. In the presence of a non-vanishing
bias voltage applied to two attached macroscopic leads both spin and charge
currents are driven through the device. We demonstrate that the spin and
charge currents are controllable by adjusting the gate voltage, the
frequency of driving field and the magnitude of the magnetic field as well.
An interesting resonance phenomenon is observed. |
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Keywords: | |
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