| 超导临界温度理论(Ⅰ) |
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| 引用本文： | 吴杭生,蔡建华,龚昌德,吉光达,蔡俊道.超导临界温度理论(Ⅰ)[J].物理学报,1977,26(6):509-520. |
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| 作者姓名： | 吴杭生 蔡建华 龚昌德 吉光达 蔡俊道 |
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| 摘 要： | 本文求出了Eliashberg方程在T=Tc时的解,得到了下面的临界温度级数表示式:Tc=α0(μ*)(λ〈ω2〉)1/2{1+1/λα1(μ*)〈ω4>/〈ω2>2+1/λ2(α21(μ*)〈ω6>/〈ω2>3+α22(μ*)〈ω4>2/〈ω2>4) +1/λ3(α31(μ*)〈ω8>/〈ω2>4+α32(μ*)(〈ω4>〈ω6>)/〈ω2>5)+α33(μ*)〈ω4>3/〈ω2>6+…},其中α0(μ*),α1(μ*)等仅是μ*的函数。新的Tc公式表明了,Tc不仅依赖于λ、μ*和〈ω2〉,而且依赖于有效声子谱α2F(ω)的各级矩〈ω2n〉。
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| 收稿时间： | 6/1/1977 12:00:00 AM |
THEORY OF THE SUPERCONDUCTING CRITICAL TEMPERATURE (Ⅰ) |
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| WU HANG-SHENG,CAI JIAN-HUA,GONG CHANG-DE,JI GUANG-DA and CAI JUN-DAO.THEORY OF THE SUPERCONDUCTING CRITICAL TEMPERATURE (Ⅰ)[J].Acta Physica Sinica,1977,26(6):509-520. |
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| Authors: | WU HANG-SHENG CAI JIAN-HUA GONG CHANG-DE JI GUANG-DA and CAI JUN-DAO |
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| Abstract: | In this paper, we have solved the Eliashberg equation for T=Tc, obtaining a series expression for the superconducting critical temperature Tc=α0(μ*)(λ〈ω2〉)1/2{1+1/λα1(μ*)〈ω4>/〈ω2>2+1/λ2(α21(μ*)〈ω6>/〈ω2>3+α22(μ*)〈ω4>2/〈ω2>4) +1/λ3(α31(μ*)〈ω8>/〈ω2>4+α32(μ*)(〈ω4>〈ω6>)/〈ω2>5)+α33(μ*)〈ω4>3/〈ω2>6+……}, where α0(μ*), α1(μ*) etc. depend upon μ* only. This new Tc formula shows that Tc is determined not only by λ, 〈ω2〉 and μ*, but also by the various moments 〈ω2n〉 of the effective phonon spectrum. |
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