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Orbital mechanism of the circular photogalvanic effect in quantum wells | | S.A. Tarasenko
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12 Jan 2007 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Materials Science | | Abstract: | It is shown that the free-carrier (Drude) absorption of circularly polarized radiation in quantum well structures leads to an electric current flow. The photocurrent reverses its direction upon switching the light helicity. A pure orbital mechanism of such a circular photogalvanic effect is proposed that is based on interference of different pathways contributing to the light absorption. Calculation shows that the magnitude of the helicity dependent photocurrent in $n$-doped quantum well structures corresponds to recent experimental observations. | | Source: | arXiv, cond-mat/0701274 | | Services: | Forum | Review | PDF | Favorites | |
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