The Kondo effect of a magnetic impurity under the crystalline field |
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Authors: | Professor Toshio Soda |
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Institution: | 1. Institut für Theoretische Physik, Universit?t Frankfurt, Germany 2. Department of Physics, Tokyo University of Education, 3-19 Ohtsuka Bunkyoku, Tokyo, Japan
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Abstract: | Using the Coqblin-Schrieffer exchange interaction, we investigate the Kondo effect for a magnetic impurity under the crystalline field, as occuring in La or Y alloys containing cerium impurities. The Hamann typet-matrix equation for the conduction electron scattered by a magnetic impurity is derived and solved, using the method of Zittarz and Müller-Hartmann. We find a Kondo type anomaly and a decreased Kondo temperature due to the crystalline field splittings. The resistivity, entropy and specific heat are calculated and they show some characteristic behavior due to the crystalline field splittings. |
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