Spin photocurrents and circular photon drag effect in (110)-grown quantum well structures
V.A. Shalygin, H. Diehl, Ch. Hoffmann, S.N. Danilov, T. Herrle, S.A., Tarasenko, D. Schuh, Ch. Gerl, W. Wegscheider, W. Prettl, and S.D. Ganichev
TL;DR
This paper investigates spin photocurrents in (110)-grown quantum wells, revealing the circular photon drag effect with a microscopic model showing its spin-dependent origin, supported by experimental data and phenomenological theory.
Contribution
It presents the first observation of the circular photon drag effect in (110)-grown quantum wells and develops a microscopic model explaining its spin-dependent nature.
Findings
Observation of circular photon drag effect in quantum wells
Experimental data aligns with phenomenological theory
Microscopic model confirms spin-dependent origin
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.
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