| 两带模型与MgB2的超导电性 |
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| 引用本文： | 苏希玉,张宪科,翟建华.两带模型与MgB2的超导电性[J].低温与超导,2007,35(1):56-58. |
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| 作者姓名： | 苏希玉 张宪科 翟建华 |
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| 作者单位： | 曲阜师范大学,曲阜,273165;曲阜书院中学,曲阜,273100 |
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| 摘 要： | 文中基于两带模型,通过引入非电-声短程相互作用,在弱耦合极限下按实验结果选定一组参数,同时得到了MgB2超导体的临界温度、同位素效应指数、零温能隙及比热的跃变,这些结果与实验相符合。
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| 关 键 词： | 两带模型 超导电性 非电-声短程相互作用 |
| 修稿时间： | 2006年9月4日 |
Two-band model and MgB2 superconductivity |
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| Su Xiyu,Zhang Xianke,Zhai Jianhua.Two-band model and MgB2 superconductivity[J].Cryogenics and Superconductivity,2007,35(1):56-58. |
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| Authors: | Su Xiyu Zhang Xianke Zhai Jianhua |
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| Abstract: | By introducing non-electron-phonon short-range interaction in two-band model,we derive the equations of the critical temperature,the isotope effect exponent,the zero temperature gaps and the specific heat jump of MgB2 superconductor in weak-coupling limit.We calculate these physical quantities with the same parameters supplied by experiments,and the results are consistent with experimental data. |
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| Keywords: | Two-band model Superconductivity Non-electron-phonon short-range interaction |
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