Fully Relativistic Calculations of Magneto-Optical Kerr Effect
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概要
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We study the magneto-optical Kerr effect using fully relativistic calculations. Spin–orbit coupling is dealt with exactly solving the Dirac equation directly and the matrix elements of the Dirac matrices α are used in a fully relativistic expression of the Kubo formula for the optical conductivity derived with a relativistic sum rule. We also perform approximate calculations of the optical conductivity to examine the accuracy of a partly relativistic expression in which the matrix elements of the momentum operator p are used instead. As an example, we carry out calculations for bcc Fe and fcc Ni using the fully relativistic full-potential linear-combination-of-atomic-orbitals method. It is found that the partly relativistic treatment is good for the diagonal optical conductivity while it is not very good for the off-diagonal optical conductivity, the Kerr rotation angle, and the Kerr ellipticity. The results of the present study are compared to those of experimental and other theoretical studies.
- 社団法人日本物理学会の論文
- 2007-05-15
著者
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SUZUKI Shugo
Institute of Materials Science, University of Tsukuba
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ARIIZUMI Toshihiro
Institute of Materials Science, University of Tsukuba
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LI Ming-Fang
Institute of Materials Science, University of Tsukuba
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Suzuki Shugo
Univ. Tsukuba Ibaraki Jpn
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Suzuki Shugo
Institute Of Materials Science University Of Tsukuba
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Li Ming‐fang
Institute Of Materials Science University Of Tsukuba
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Li Ming-fang
Institute Of Materials Science University Of Tsukuba
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Ariizumi Toshihiro
Institute Of Materials Science University Of Tsukuba
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Arizumi Toshihiro
Institute of Materials Science, University of Tsukuba
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Suzuki Shugo
Institute of Material Science, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
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