摘要
A Gaussian type spin-polarized electronic wave packet is constructed to investigate the spin transport behaviour in an infinite two-dimensional electron gas system with Rashba spin-orbit （SO） interaction by solving the Schrodinger equation exactly. In the presence of Rashba SO interaction, the spin-dependent force induces a momentum dependent sp]itting of the two spin directions, the average spin current indicates the corresponding spin accumulation clearly. Furthermore, the coherence of the injected spin-polarized wave packet, as well as the transverse force, decays during the motion in the Rashba SO regime.
A Gaussian type spin-polarized electronic wave packet is constructed to investigate the spin transport behaviour in an infinite two-dimensional electron gas system with Rashba spin-orbit （SO） interaction by solving the Schrodinger equation exactly. In the presence of Rashba SO interaction, the spin-dependent force induces a momentum dependent sp]itting of the two spin directions, the average spin current indicates the corresponding spin accumulation clearly. Furthermore, the coherence of the injected spin-polarized wave packet, as well as the transverse force, decays during the motion in the Rashba SO regime.
基金
Supported by the National Natural Science Foundation of China.
