Fluctuation Effect on Magnetization and Specific Heat in High Temperature Superconductors under Magnetic Field
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概要
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Using the renormalized fluctuation theory developed to explain the resistive transi-lion in high temperature superconductors (HTSC) under an applied field, a formulafor temperature derivative of magnetization is derived which enables one to study thereversible temperature region in HTSC with layer structure. It is pointed out that,because of strong fluctuation effects in HTSC, the reversible dc magnetization ofHTSC below T.. has a nontrivial field dependent correction due to higher Landaulevel fluctuations to the usual mean field-like behavior, and that the linear tempera-ture dependence should not be seen in BSCCO. A good agreement with YBCO data isobtained. A higher Landau level correction to the specific heat is also discussed.
- 社団法人日本物理学会の論文
- 1991-04-15
著者
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Tsuneto Toshihiko
Department Of Physics Faculty Of Engineering Science Osaka University
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Ikeda Ryusuke
Department Of Physics Kyoto University
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