Magnetic Susceptibility of Multiorbital Systems(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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Effects of orbital degeneracy on magnetic susceptibility in paramagnetic phases are investigated within a mean-field theory. Under certain crystalline electric fields, the magnetic moment consists of two independent moments, e.g., spin and orbital moments. In such a case, the magnetic susceptibility is given by the sum of two different Curie-Weiss relations, leading to deviation from the Curie-Weiss law. Such behavior may be observed in d- and f-electron systems with t_<2g> and Γ_8 ground states, respectively. As a potential application of our theory, we attempt to explain the difference in the temperature dependence of magnetic susceptibilities of UO_2 and NpO_2.
- 社団法人日本物理学会の論文
- 2006-01-15
著者
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Hotta Takashi
Advanced Science Research Center Japan Atomic Energy Agency
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KUBO Katsunori
Advanced Science Research Center, Japan Atomic Energy Agency
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