Dichotomy between nodal and antinodal quasiparticles in underdoped (La2-xSrx)CuO4 superconductors -: art. no. 187001

被引：111

作者：

Zhou, XJ ^{[1
]}

Yoshida, T

Lee, DH

Yang, WL

Brouet, V

Zhou, F

Ti, WX

Xiong, JW

Zhao, ZX

Sasagawa, T

Kakeshita, T

Eisaki, H

Uchida, S

Fujimori, A

Hussain, Z

Shen, ZX

机构：

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

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

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA

[4] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 113, Japan

[5] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[7] Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, Beijing 100080, Peoples R China

[8] Univ Tokyo, Dept Superconduct, Bunkyo Ku, Tokyo 113, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 18期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevLett.92.187001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High resolution angle-resolved photoemission measurements on an underdoped (La2-xSrx)CuO4 system show that, at energies below 70 meV, the quasiparticle peak is well defined around the (pi/2,pi/2) nodal region and disappears rather abruptly when the momentum is changed from the nodal point to the (pi,0) antinodal point along the underlying "Fermi surface." It indicates that there is an extra low energy scattering mechanism acting upon the antinodal quasiparticles. We propose that this mechanism is the scattering of quasiparticles across the nearly parallel segments of the Fermi surface near the antinodes.

引用

页码：187001 / 1

页数：4

共 21 条

[1] Nearly singular magnetic fluctuations in the normal state of a high-T-c cuprate superconductor [J].