Intense terahertz laser fields on a two-dimensional electron gas with Rashba spin-orbit coupling

Details Intense terahertz laser fields on a two-dimensional electron gas with Rashba spin-orbit coupling Intense terahertz laser fields on a two-dimensional electron gas with Rashba spin-orbit coupling

2004-10-08

arxiv.org/abs/cond-mat/0410186v2

Appl. Phys. Lett. 86, 032107 (2005).

Physics

Condensed Matter

Materials Science

3 pages, 3 figures, a typo in Fig. 3(b) is corrected

Scientific paper

10.1063/1.1852732

The spin-dependent density of states and the density of spin polarization of an InAs-based two-dimensional electron gas with the Rashba spin-orbit coupling under an intense terahertz laser field are investigated by utilizing the Floquet states to solve the time-dependent Schr\"odinger equation. It is found that both densities are strongly affected by the terahertz laser field. Especially a terahertz magnetic moment perpendicular to the external terahertz laser field in the electron gas is induced. This effect can be used to convert terahertz electric signals into terahertz magnetic ones efficiently.

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