Angle-resolved photoemission study of insulating and metallic Cu-O chains in PrBa2Cu3O7 and PrBa2Cu4O8

被引：38

作者：

Mizokawa, T ^{[1
]}

Kim, C

Shen, ZX

Ino, A

Yoshida, T

Fujimori, A

Goto, M

Eisaki, H

Uchida, S

Tagami, M

Yoshida, K

Rykov, AI

Siohara, Y

Tomimoto, K

Tajima, S

Yamada, Y

Horii, S

Yamada, N

Yamada, Y

Hirabayashi, I

机构：

[1] Univ Tokyo, Dept Complex Sci & Engn, Bunkyo Ku, Tokyo 1130033, Japan

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

[3] Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA

[4] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[5] Univ Tokyo, Dept Superconduct, Bunkyo Ku, Tokyo 1130033, Japan

[6] Univ Tokyo, Dept Adv Mat, Bunkyo Ku, Tokyo 1130033, Japan

[7] Int Superconduct Technol Ctr, Superconduct Res Lab, Koto Ku, Tokyo 1350062, Japan

[8] Shimane Univ, Fac Sci & Engn, Matsue, Shimane 6900823, Japan

[9] Univ Electrocommun, Dept Appl Phys & Chem, Chofu, Tokyo 1828585, Japan

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.85.4779

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We compare the angle-resolved photoemission spectra of the hole-doped Cu-O; chains in PrBa2Cu3O7 (Pr123) and in PrBa2Cu4O8 (Pr124). While, in Pr123,: a dispersive feature from the chain takes a band maximum at k(b) (momentum along the chain) similar to pi /4 and loses its spectral weight around the Fermi level, it reaches the Fermi level at k(b) similar to pi /4 in Pr124. Although the chains in Pr123 and Pr124 are approximately 1/4 filled, they show contrasting behaviors: While the chains in Pr123 have an instability to charge ordering, those in Pr124 avoid it and show an interesting spectral feature of a metallic coupled-chain system.

引用

页码：4779 / 4782

页数：4

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