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arXiv 0905.3295cond-mat.mes-hall
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非线性磁旋光电流效应

Nonlinear magneto-gyrotropic photogalvanic effect

H. Diehl, V. A. Shalygin, L. E. Golub, S. A. Tarasenko, S. N. Danilov, V. V. Bel'kov, E. G. Novik, H. Buhmann, C. Brüne, E. L. Ivchenko, S. D. Ganichev

摘要:

报道了在HgTe/HgCdTe量子阱中观察到的非线性磁旋光电流效应。中红外辐射的带间吸收以及太赫兹辐射的子带内吸收的异质结中示出,导致在面内磁场的存在下的直流电流。在只具有反转能带结构的量子阱中,观察到光电流的磁场分量为立方。实验数据进行了讨论的唯象理论和微观模型。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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