Periodic coherence-peak height modulations in superconducting Bi2Sr2CaCu2O8+δ -: art. no. 214514

被引：62

作者：

Fang, A ^{[1
]}

Howald, C

Kaneko, N

Greven, M

Kapitulnik, A

机构：

[1] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[3] Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.70.214514

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper we analyze, using scanning tunneling spectroscopy (STS), the local density of electronic states (LDOS) in nearly optimally doped Bi2Sr2CaCu2O8+delta in zero magnetic field. We see both dispersive and nondispersive spatial LDOS modulations as a function of energy in our samples. Moreover, a spatial map of the superconducting coherence peak heights shows the same structure as the low-energy LDOS. This suggests that these nondispersive LDOS modulations originate from an underlying charge-density modulation, which interacts with superconductivity.

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页码：1 / 8

页数：8

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