Electron Pairing in Real Space,Model Pseudo-Spin Hamiltonian,and Ginzburg-Landau Equation for High-T_c Oxide Superconductors
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概要
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Superconductivity by electron pairing in real space is modelled by a reducedHamiltonian in pseudo-spin form, which is similar to the Hamiltonian for a planarHeisenberg ferromagnet in an external field. By making correspondence of coherentstates of the model pseudo-spin system to superconducting states, an effective, zero-temperature Ginzburg-Landau (GL) equation is derived. Pseudo-spin parameters areevaluated from the GL parameters obtained by Meissner effect measurement andother methods for Ba.YCu,0.., with T.=9I K. The numerical value of T. is estimatedby using the mean-field approximation. The result so obtained is shown to be in fairlygood agreement with the experimental result.
- 社団法人日本物理学会の論文
- 1987-10-15
著者
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Takeno Shozo
Department Of Physics Faculty Of Engineering And Design Kyoto Institute Of Technology
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Takeno Shozo
Department Of Information Systems Faculty Of Information Science Osaka Institute Of Technology
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Takeno Shozo
Department Of General Education Osaka Institute Of Technology
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