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Institut f. Physik FG Nanostrukturierte Materialien
Martin-Luther-Universitat Halle-Wittenberg
Von-Danckelmann-Platz 3, D-06120 Halle, Germany
Tel.: +49 345 55 25321
Fax.: +49 345 55 27034
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M.K. Kneip, D.R. Yakovlev, M. Bayer, T. Slobodskyy, G. Schmidt, L.W. Molenkamp Electric field control of magnetization dynamics in ZnMnSe/ZnBeSe diluted-magnetic-semiconductor heterostructures Appl. Phys. Lett. 88 (2015-02-24 14:13:10), 212105
We show that the magnetization dynamics in diluted magnetic semiconductors can be controlled separately from the static magnetization by means of an electric field. The spin-lattice relaxation (SLR) time of magnetic ions was tuned by two orders of magnitude by a gate voltage applied to n-type modulation-doped quantum wells. The effect is based on providing an additional channel for SLR by a two-dimensional electron gas(2DEG). The static magnetization responsible for the giant Zeeman spin splitting of excitons was not influenced by the 2DEG density. http://scitation.aip.org/content/aip/journal/apl/88/21/10.1063/1.2206681 |
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