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CONDENSED MATTER

Spin photocurrents and circular photon drag effect in (110)-grown quantum well structures

V. A. Shalygin^a, H. Diehl^b, Ch. Hoffmann^b, S. N. Danilov^b, T. Herrle^b, S. A. Tarasenko^c, D. Schuh^b, Ch. Gerl^b, W. Wegscheider^b, W. Prettl^b, S. D. Ganichev<sup>b

a</sup> St. Petersburg State Polytechnic University
^b Fakulty Physics, University of Regensburg, 93040 Regensburg, Germany
^c Ioffe Physico-Technical Institute, Russian Academy of Sciences

Abstract: We report on the study of spin photocurrents in (110)-grown quantum well structures. Investigated effects comprise the circular photogalvanic effect and so far not observed circular photon drag effect. The experimental data can be described by an analytical expression derived from a phenomenological theory. A microscopic model of the circular photon drag effect is developed demonstrating that the generated current has spin dependent origin.

PACS: 72.25.Fe, 72.25.Rb, 73.50.Pz, 78.67.De

Received: 26.10.2006

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2006, 84:10, 570–576

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