Electronic structure of the CuO-chain layer in YBa2Cu3O7-δ studied by scanning tunneling microscopy -: art. no. 140511

被引：30

作者：

Maki, M ^{[1
]}

Nishizaki, T

Shibata, K

Kobayashi, N

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Ctr Low Temp Sci, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.65.140511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-temperature scanning tunneling microscopy measurements have been performed on YBa2Cu3O7-delta single crystals with various oxygen contents (6.65less than or equal to7-deltaless than or equal to6.98). In the CuO-chain layer, we observe the doping-dependent charge modulation images that are attributed to the charge-density wave (CDW) due to the 2k(F) instability of the one-dimensional Fermi surface. Even in the so-called 60-K T-c plateau region, the CDW correlation in the CuO-chain layer survives partially. Our scanning tunneling microscopy results indicate that the CuO chain without oxygen vacancies is 1/4 filled and prefers to form a CDW state.

引用

页码：1 / 4

页数：4

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