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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