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Spin–spin interaction in magnetic semiconductor quantum dots |
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| Authors: | G Bacher H Schmig M Scheibner A Forchel AA Maksimov AV Chernenko PS Dorozhkin VD Kulakovskii T Kennedy TL Reinecke |
| Institution: | aWerkstoffe der Elektrotechnik, Universität Duisburg-Essen, Bismarckstr. 81, 47057 Duisburg, Germany;bTechnische Physik, Universität Wüzburg, Am Hubland, 97074 Würzburg, Germany;cInstitute of Solid State Physics, RAS, 142432 Chernogolovka, Russia;dNaval Research Laboratory, Washington DC 20375-5347, USA |
| Abstract: | Self-assembled Cd(Mn)Se/Zn(Mn)Se quantum dots have been investigated by means of spatially and time-resolved magneto-optical spectroscopy. In such quasi zero-dimensional diluted magnetic semiconductors, the exchange interaction couples the spins of optically generated charge carriers with localized magnetic ion spins. We demonstrate that this can be used on the one hand to monitor nanoscale magnetization with a resolution of <100 μB by a purely optical technique and on the other hand to optically manipulate the magnetization in a semiconductor quantum dot. |
| Keywords: | Magnetic semiconductor quantum dots Nanoscale magnetization Spin– spin interaction |
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