Directional tunneling and andreev reflection on YBa2Cu3O7-δ single crystals:: Predominance of d-wave pairing symmetry verified with the generalized Blonder, Tinkham, and Klapwijk theory

被引：361

作者：

Wei, JYT ^{[1
]}

Yeh, NC

Garrigus, DF

Strasik, M

机构：

[1] CALTECH, Dept Phys, Pasadena, CA 91125 USA

[2] Boeing Phantom Works, Seattle, WA 98124 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.81.2542

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report directional tunneling and point-contact spectroscopy measurements on the {100}, {110}, and {001} faces of YBa2Cu3O7-delta single crystals at 4.2 K. The conductance spectra show fully developed quasiparticle tunneling, Andreev reflection, and zero-bias peak characteristics, depending systematically on the junction orientation and impedance. Quantitative spectral analysis using the generalized formalism of Blender, Tinkham, and Klapwijk (BTK) indicates a predominantly d(x)(2)-y(2) pairing symmetry, with less than 5% s-wave component in either the d + s or d + is scenario. [S0031-9007(98)07041-0].

引用

页码：2542 / 2545

页数：4

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