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Spin Currents in Diluted Magnetic Semiconductors

Ganichev, Sergey, Tarasenko, Sergey, Belkov, Vassilij, Olbrich, Peter, Eder, Wolfgang, Yakovlev, D., Kolkovsky, V., Zaleszczyk, W., Karczewski, G., Wojtowicz, T. and Weiss, Dieter (2009) Spin Currents in Diluted Magnetic Semiconductors. Physical Review Letters (PRL) 102 (15), pp. 156602-1.

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We study zero-bias spin separation in (Cd,Mn)Te/(Cd,Mg)Te diluted magnetic semiconductor structures. The spin current generated by electron gas heating under terahertz radiation is converted into a net electric current by applying an external magnetic field. The experiments show that the spin polarization of the magnetic ion system enhances drastically the conversion process due to giant Zeeman splitting of the conduction band and spin-dependent electron scattering on localized Mn2+ ions.

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Item type:Article
Institutions:Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
Projects:SFB 689: Spinphänomene in reduzierten Dimensionen
Identification Number:
72.25.Fe; 73.21.Fg; 73.63.Hs; 78.67.DePACS
Dewey Decimal Classification:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Partially
Item ID:8280
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