【摘要】 本文采用广义的 Pines 凝胶模型导出电子—声子耦合系数 g 的解析表达式,并在 Gennes 方程组的基础上得到化合物德拜温度 T_d 的计算公式。最后把求得 g 和 T_d 代入修正的 BCS 公式中,算出超导化合物的临界温度。计算表明:对于超导多元化合物 La_1.85Ba_0.15CuO₄、（RE）_?Ba₂Cu₃O_?和 Tl_?Ba_1.7Ca_1.3Cu_?O_?而言,临界温度计算值与实验值的最大相对误差小于10%。更多还原

【Abstract】 We derived an analytical expression for the coupling coefficient g of electron-phonon interaction from the extended Pines model;and on the Gennes equationsthen obtained the calculating formula of Debye temperature T_d of compounds;fina-lly inserting g and T_d in BCS formula modified,calculated the critical temperatureT_c of superconducting compounds.For the superconducting multicomponent compo-unds,such as La_1.85Ba_0.15CuO₄,（RE）₁Ba₂Cu₃O_? and Tl₂Ba_1.7Ca_1.3Cu₃O_?,themodified BCS formula was accurate within a relative error of ±10%.更多还原