Nonlinear magneto-gyrotropic photogalvanic effect

Details Nonlinear magneto-gyrotropic photogalvanic effect Nonlinear magneto-gyrotropic photogalvanic effect

2009-05-20

arxiv.org/abs/0905.3295v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 9 figures

Scientific paper

We report on the observation of nonlinear magneto-gyrotropic photogalvanic effect in HgTe/HgCdTe quantum wells. The interband absorption of mid-infrared radiation as well as the intrasubband absorption of terahertz radiation in the heterostructures is shown to cause a dc electric current in the presence of an in-plane magnetic field. A cubic in magnetic field component of the photocurrent is observed in quantum wells with the inverted band structure only. The experimental data are discussed in terms of both the phenomenological theory and microscopic models.

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