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Circular photogalvanic effect in HgTe/CdHgTe quantum well structures

Wittmann, B, Danilov, SN, Bel'kov, VV, Tarasenko, SA, Novik, EG, Buhmann, H, Brüne, C, Molenkamp, LW, Kvon, ZD, Mikhailov, NN, Dvoretsky, SA, Vinh, NQ, Meer, AFGVD, Murdin, B and Ganichev, SD (2010) Circular photogalvanic effect in HgTe/CdHgTe quantum well structures arXiv. (Unpublished)

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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 (THz) radiation in the QWs 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.

Item Type: Article
Additional Information: Unpublished manusrcipt. Posted in arXiv
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Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Faculty of Engineering and Physical Sciences > Physics
Depositing User: Symplectic Elements
Date Deposited: 24 Nov 2011 12:45
Last Modified: 23 Sep 2013 18:50

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