Simple-Decoupling Treatment of Hall Effect in Strongly Correlated Superconductors

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概要

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• On the basis of the t-J model, the normal-state Hall coefficier?t R. at finite temperature and the superconducting transition temperature T. of tlte strongly correlatedsuperconductors are calculated as functions of doping fraction J, within theframework of the Hubbard-I-type decoupling-metltod of the Green's functions andby using the expression for 7<. derived by Fukuyama. The sujcerconductivity-inducing J is treated in a mean-field-like approximation and the no?-mat-state 'tt does notcontain the contribution of J. The obtained results are symmetrical with respect tohole and electron-doping. In the hole (electron)-doping case, the resultant 7?.. ispositive (negative) for J< l / 3 and changes in sign at d = l / 3, a nd it varies in propor-lion to i for small J. These behaviors are comp;tred with the experimental resultsof high-7'. oxides.IHall coefficient, high-7-.Superconductor, t-J model, decoupling approximation, ]l the Green's functionll

• 社団法人日本物理学会の論文
• 1990-11-15

著者

• Misawa Susumu

  Faculty Of Human Science Tokiwa University

関連論文

• Magnetic Properties and Superconductivity of the Strong Coupling Hubbard Model
• Magnetic Properties of the Strong Coupling Hubbard Model
• Simple-Decoupling Treatment of Hall Effect in Strongly Correlated Superconductors
• Simple-Decoupling Theory of High-T_c Superconductivity

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