Analytical Methods and Computer Calculations of XY Model with Impurity Spin
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概要
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The one dimensional XY model of spin 1/2 is discussed by transforming the spin operators to the Fermi operators. This method can be applied to the XY model with an impurity spin. In that case a pair of localized exciton (or a kind of magnon) levels are obtained. The energy of states can be determined by distributing the excitons over two sets of exciton levels which depend on whether the number of excitons is even or odd. The energy levels of states are calculated by the computer for small rings of 4, 6 and 8 spins. The results can be perfectly understood by the theory.
- 社団法人日本物理学会の論文
- 1969-06-05
著者
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OGUCHI Takehiko
Department of Physics, Tokyo University of Education
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ONO Ikuo
Department of Physics, Tokyo Institute of Technology
関連論文
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