Magnetic susceptibility of the spin polaron states in the s-f exchange model above curie temperature |
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Authors: | MI Auslender MI Katsnelson |
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Institution: | Institute for Metal Physics Urals Scientific Center USSR Academy of Sciences, GSP 170 Sverdlovsk, USSR |
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Abstract: | The static spin susceptibility tensor of magnetic semiconductor in a framework of the s-f exchange model above the Curie temperature is calculated. The Feynman path integral variational method is used to take into account the spin polaron formation. Free energy estimations of the phenomenological theory of Krivoglaz are justified microscopically. The spin polaron effect on ESR frequencies is considered. |
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