Theory of asymmetric tunneling in the cuprate superconductors

被引：80

作者：

Anderson, PW ^{[1
]}

Ong, NP ^{[1
]}

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2006年 / 67卷 / 1-3期

关键词：

D O I：

10.1016/j.jpcs.2005.10.132

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We explain quantitatively, within the Gutzwiller-Resonating Valence Bond theory, the puzzling observation of tunneling conductivity between a metallic point and a cuprate high-T-c superconductor which is markedly asymmetric between positive and negative voltage biases. The asymmetric part does not have a 'coherence peak' but does show structure due to the gap. The fit to data is satisfactory within the over-simplifications of the theory; in particular, it explains the marked 'peak-dip-hump' structure observed on the hole side and a number of other qualitative observations. This asymmetry is strong evidence for the projective nature of the ground state and hence for 't-J' physics. (c) 2005 Elsevier Ltd. All rights reserved.

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页码：1 / 5

页数：5

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