| Nd-(Ce)-Cu-O的电子结构和超导电性 |
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| 引用本文： | 陈世民,孙继信.Nd-(Ce)-Cu-O的电子结构和超导电性[J].物理学报,1990,39(12):1994-1998. |
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| 作者姓名： | 陈世民 孙继信 |
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| 作者单位： | 南京大学物理系,南京,210008 |
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| 摘 要： | 本文应用线性化缀加平面波(WLAPW)方法自洽地计算了Nd2CuO4的电子结构,由于局域的Nd4f电子与导带电子的相互作用(杂化),使Cu—O(1)的dp带在高于Fermi能0.18ev处出现了峰值≈4state/eV·cell的态密度(DOS)峰,可能用来说明Nd2-xCexCuO4随x变化而出现的超导电性转变。
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| 关 键 词： | Nd2－xCexCuO4 电子结构 超导电性 |
| 收稿时间： | 1990-02-20 |
ELECTRONIC STRUCTURE AND SUPERCONDUCTIVITY OF Nd-(Ce)-Cu-O |
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| CHEN SHI-MIN and SUN JI-XIN.ELECTRONIC STRUCTURE AND SUPERCONDUCTIVITY OF Nd-(Ce)-Cu-O[J].Acta Physica Sinica,1990,39(12):1994-1998. |
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| Authors: | CHEN SHI-MIN and SUN JI-XIN |
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| Abstract: | The electronic structure of Nd2CuO4 has been calculated self-consistently by WLAPW method. Because of the interactions (hybridization) between the electrons in the localized Nd 4f bands and those in the conduction band, a≈4 states/eV. cell DOS peak of the Cu-0(1) dp a band is presented at 0.18 eV above the Fermi energy, which may be used as a possible interpretation of the superconducting transition in Nd2-xCexCuO4 with x. |
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