| 超导邻近效应在正常金属层中引起的反常小能隙现象 |
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| 引用本文： | 郁华玲.超导邻近效应在正常金属层中引起的反常小能隙现象[J].物理学报,2007,56(10):6038-6044. |
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| 作者姓名： | 郁华玲 |
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| 作者单位： | 淮阴师范学院物理与电子学系,淮安,223001 |
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| 基金项目： | 淮阴师范学院青年优秀人才支持计划 |
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| 摘 要： | 将散射矩阵方法推广到超导双结系统，对正常金属/正常金属/超导结的隧道电导进行了研究.中间正常金属层中的电子和其Andreev反射空穴之间的相位相干性导致了隧道电导出现反常小能隙现象.综合考虑相干和顺序遂穿，计算结果理想的解释了最近Gupta等人在实验中观测到的反常小能隙现象.
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| 关 键 词： | 超导邻近效应 Andreev反射 相干隧穿 顺序隧穿 |
| 收稿时间： | 2006-12-02 |
| 修稿时间： | 2/1/2007 12:00:00 AM |
Abnormal minigap induced by superconducting proximity effects in a metallic film |
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| Yu Hua-Ling.Abnormal minigap induced by superconducting proximity effects in a metallic film[J].Acta Physica Sinica,2007,56(10):6038-6044. |
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| Authors: | Yu Hua-Ling |
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| Institution: | Department of Physics and Electronics, Huaiyin Normal College, Huaian 223001, China |
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| Abstract: | The scattering matrix approach is applied to study tunneling spectra in normal metal/normal metal/superconductor double junctions. The abnormal minigap in tunneling conductance is attributed to the phase coherence of electrons and Andreev-reflected holes in the middle metallic film. We consider a combination of the coherent tunneling with the sequential tunneling and the calculated results provide a reasonable explanation for the abnormal minigap observed in recent experiments. |
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| Keywords: | superconductor proximity effects Andreev reflection coherent tunneling sequential tunneling |
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