| 论薄膜的超导电性(英文) |
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| 引用本文： | 程开甲,程漱玉. 论薄膜的超导电性(英文)[J]. 稀有金属材料与工程, 2008, 37(10) |
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| 作者姓名： | 程开甲 程漱玉 |
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| 作者单位： | 西北核技术研究所,陕西,西安,710024 |
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| 摘 要： | 应用Cheng-Born能带对称破缺理论和TFDC(Thomas-Fermi-Dirac-Cheng)电子理论研究了薄膜层内电子的特性.对金属铂上的TiO2膜层来说,TFDC理论指出电子(或空穴)将由金属与膜的间界面一侧迁移到另一侧.根据Cheng-Born对称破缺理论,当能带中只有很少的电子时,则只有极少的角区中存在电子,动量空间即产生对称破缺,从而导致超导电性,并由热力学估算出薄膜超导体的转变温度.结果显示薄膜超导体的转变温度至少比块材超导体的转变温度高一个量级.作者还设计了一个研究薄膜超导电性的实验.
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| 关 键 词： | 超导电性 薄膜 对称破缺 |
On Possibility of Superconductivity in Thin Films |
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| Cheng Kaijia,Cheng Shuyu. On Possibility of Superconductivity in Thin Films[J]. Rare Metal Materials and Engineering, 2008, 37(10) |
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| Authors: | Cheng Kaijia Cheng Shuyu |
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| Abstract: | Behavior of electrons inside a thin coating layer is studied. It is based on Cheng-Born theory of broken symmetry and TFDC(Thomas-Fermi-Dirac-Cheng) electron theory. For a specimen (TiO2, say) coated on a conducting metal plate (e.g. platinum), according to the TFDC model, a small group of electrons (or holes) will transfer from one side of boundary to the other. Based on Cheng-Born theory, in case where only few electrons exist in zone, only a few corners are occupied, broken symmetry in momentum space wil... |
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| Keywords: | TFDC superconductivity thin film broken symmetry TFDC |
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