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作者设计了一个图分析法,用来分析Eliashberg方程的数值解。从这个分析,得到如下结论:硬化归一有效声子谱g(ω),可使超导材料的Tc提高。而g(ω)软化,只能提高小λ超导体的Tc。The numerical solution of the Eliashberg equation is analysed by a graphic analytic method, and the following conclusions are arrived. The superconducting Tc of a superconductor can be enhanced through the ‘hardening' of its normalized effective phonon spectrum g(ω). And the ‘softening' of g(ω) could enhance the Tc for a superconducting material with small λ, but not for the superconductor whose A is large.
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