Spin Carrier Exchange Interactions in (Ga,Mn)N and (Zn,Co)O Wide Band Gap Diluted Magnetic Semiconductor Epilayers |
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| Authors: | D. Ferrand S. Marcet W. Pacuski E. Gheeraert P. Kossacki J. A. Gaj J. Cibert C. Deparis H. Mariette C. Morhain |
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| Affiliation: | (1) CNRS-CEA-UJF Joint Group, Laboratoire de Spectrometrie Physique, BP 87, F-38402 Saint Martin d!["rsquo"]("/content/m51160228106j251/xlarge8217.gif") Hères Cedex, France;(2) Institute of Experimental Physics, Warsaw University, Ho!["zdot"]("/content/m51160228106j251/xlarge380.gif") a 69, PL-00-681 Warszawa, Poland;(3) Laboratoire dEtudes des Proprietes Electroniques des Solides, BP166 38042 Grenoble Cedex 9, France;(4) Laboratoire Louis Néel, CNRS, BP 166X, 38042 Grenoble, France;(5) CRHEA rue Bernard Grégory, 06560 Valbonne, France |
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| Abstract: | (Ga,Mn)N and (Zn,Co)O wide band gap diluted magnetic semiconductor epilayers have been investigated by magneto-optical spectroscopy. In both cases, absorption bands observed below the energy gap allow us to study the nature of the valence and spin state of the incorporated magnetic element. Exchange interactions between magnetic ions and carriers can be observed by analyzing the magnetic circular dichroism in transmission or the exciton Zeeman splitting in reflection for (Zn,Co)O. A first estimation of the exchange integrals can be given for both materials. |
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| Keywords: | diluted magnetic semiconductors wide band gap semiconductors magneto-optical properties spin carrier exchange integrals |
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