Spin-density induced by electromagnetic wave in two-dimensional electron gas

Details Spin-density induced by electromagnetic wave in two-dimensional electron gas Spin-density induced by electromagnetic wave in two-dimensional electron gas

2006-10-04

arxiv.org/abs/cond-mat/0610124v4

Europhys. Lett. 78, 27001 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Final published form

Scientific paper

10.1209/0295-5075/78/27001

We consider the magnetic response of a two-dimensional electron gas (2DEG) with a spin-orbit interaction to a long-wave-length electromagnetic excitation. We observe that the transverse electric field creates spin polarization perpendicular to the 2DEG plane. The effect is more prominent in clean systems with resolved spin-orbit-split subbands, and reaches maximum when the frequency of the wave matches the subband splitting at the Fermi momentum. The relation of this effect to the spin-Hall effect is discussed.

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