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Spin current in double quantum dot |
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| Authors: | Zhao Hu Zhang Guo-Feng Yin Wen and Liang Jiu-Qing |
| Institution: | Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China; State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
| Abstract: | We have studied the dynamical behaviours of two electrons confined in a double quantum dot driven by rotating magnetic fields in terms of the theory of Lewis－Riesenfeld Hermitian invariants for the explicitly time-dependent Hamiltonian. The coherent spin oscillations in the dot provide a generation source for spin current. Exact solutions obtained allow us to investigate the dynamical properties of the spin localization for various initial localized states. |
| Keywords: | spin current quantum dot time-dependent transformation |
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