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Probing superconducting phase fluctuations from the current noise spectrum of pseudogapped metal-superconductor tunnel junctions
Dai, X; Xiang, T; Ng, TK; Su, ZB; Dai, X , Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China.
2000
发表期刊PHYSICAL REVIEW LETTERS
ISSN0031-9007
卷号85期号:14页码:3009-3012
摘要We study the current noise spectra of a tunnel junction of a metal with strong pairing phase fluctuation and a superconductor. It is shown that there is a characteristic peak in the noise spectrum at the intrinsic Josephson frequency omega(J) = 2eV when omega(J) is smaller than the pairing gap but larger than the pairing scattering rate. In he presence of an ac voltage, the tunneling current noise shows a series of characteristic peaks with increasing de voltage. Experimental observation of these peaks will give direct evidence of the pair fluctuation in the normal state of high-T-c superconductors and the pair decay rate can be estimated from the half width of the peaks.
部门归属Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Univ Cambridge, Isaac Newton Inst Math Sci, Cambridge CB3 0HE, England
关键词Normal-state bi2sr2cacu2o8+delta Scattering Precursor Gap
学科领域Physics
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收录类别SCI
WOS记录号WOS:000089581400041
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12896
专题理论物理所1978-2010年知识产出
通讯作者Dai, X , Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China.
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GB/T 7714
Dai, X,Xiang, T,Ng, TK,et al. Probing superconducting phase fluctuations from the current noise spectrum of pseudogapped metal-superconductor tunnel junctions[J]. PHYSICAL REVIEW LETTERS,2000,85(14):3009-3012.
APA Dai, X,Xiang, T,Ng, TK,Su, ZB,&Dai, X , Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China..(2000).Probing superconducting phase fluctuations from the current noise spectrum of pseudogapped metal-superconductor tunnel junctions.PHYSICAL REVIEW LETTERS,85(14),3009-3012.
MLA Dai, X,et al."Probing superconducting phase fluctuations from the current noise spectrum of pseudogapped metal-superconductor tunnel junctions".PHYSICAL REVIEW LETTERS 85.14(2000):3009-3012.
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