Wittmann, Bernhard and Danilov, Sergey and Belkov, Vassilij and Tarasenko, Sergey and Novik, E. G. and Buhmann, Hartmut and Bruene, C. and Molenkamp, L. W. and Ivchenko, Eougenious and Kvon, Z. D. and Mikhailov, N. N. and Dvoretsky, S. A. and Vinh, N. Q. and van der Meer, A. F. G. and Murdin, B. and Ganichev, Sergey (2010) Circular photogalvanic effect in HgTe/CdHgTe quantum well structures. Semiconductor Science and Technology 25 (9), 095005.
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We describe the observation of the circular and linear photogalvanic effects in HgTe/CdHgTe quantum wells. The interband absorption of mid-infrared radiation as well as the intrasubband absorption of terahertz radiation in the quantun well structures is shown to cause a dc electric current due to these effects. The photocurrent magnitude and direction varies with the radiation polarization state and crystallographic orientation of the substrate in a simple way that can be understood from a phenomenological theory. The observed dependences of the photocurrent on the radiation wavelength and temperature are discussed in terms of a microscopic model.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev|
|Projects:||SFB 689: Spinphänomene in reduzierten Dimensionen|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||22 May 2012 15:03|
|Last Modified:||22 May 2012 15:03|
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