Terahertz Radiation Induced Spin Photocurrents in Non-Magnetic Low Dimensional Structures
S.D. Ganichev and W. Prettl
Fakultät für Physik, Universität Regensburg, 93040 Regensburg, Germany
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Received: 4 06 2005;
Spin photocurrents generated by homogeneous excitation with terahertz radiation in low dimensional structures are reviewed. Three microscopic mechanisms are responsible for the occurrence of an electric current linked to a uniform spin polarization in a quantum well, the circular photogalvanic effect, the spin-galvanic effect and the magneto-gyrotropic effect. These phenomena provide several methods to investigate various spin properties in low dimensional structures like details of band structure and spin relaxation time.
DOI: 10.12693/APhysPolA.108.581
PACS numbers:72.40.+w, 72.25.Fe, 78.67.-n, 73.21.Fg