期刊
PHYSICAL REVIEW B
卷 75, 期 20, 页码 -出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.75.201305
关键词
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We study the spin polarization and its associated spin-Hall current due to electric-dipole-induced spin resonance in disordered two-dimensional electron systems. We show that the disorder-induced damping of the resonant spin polarization can be strongly reduced by an optimal field configuration that exploits the interference between the Rashba and Dresselhaus spin-orbit interactions. This leads to a striking enhancement of the spin susceptibility while the spin-Hall current vanishes at the same time. We give an interpretation of the spin current in geometrical terms which are associated with the trajectories the polarization describes in spin space.
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