Incommensurate spin dynamics of underdoped superconductor YBa2Cu3O6.7

被引：251

作者：

Arai, M ^{[1
]}

Nishijima, T

Endoh, Y

Egami, T

Tajima, S

Tomimoto, K

Shiohara, Y

Takahashi, M

Garrett, A

Bennington, SM

机构：

[1] KEK, Inst Mat Struct Sci, Tsukuba, Ibaraki 305, Japan

[2] Tohoku Univ, Dept Phys, Aoba Ku, Sendai, Miyagi 980, Japan

[3] Univ Penn, Dept Mat Sci, Philadelphia, PA 19104 USA

[4] ISTEC, Superconduct Res Lab, Koutou Ku, Tokyo 135, Japan

[5] Univ Tsukuba, Dept Phys, Tsukuba, Ibaraki 305, Japan

[6] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.83.608

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spin dynamics of the underdoped superconductor YBa2Cu3O6.7 (T-c similar to 67 K) was revealed to have an incommensurate wave vector dependence with 'pillars" in the dispersion relation at the positions (1/2 +/- d, 1/2, 0) and (1/2, 1/2 +/- d, 0). This is the same symmetry as that found in La2-xSrxCuO4. The value of the incommensurability, d = 0.11 +/- 0.01 r.l.u similar to 1/8, is very clost: to the value expected from the hole concentration. These results have demonstrated that the spin dynamics do not depend on the details of Fermi surface but have an analogous form to that for the proposed stripe domain structure.

引用

页码：608 / 611

页数：4

共 24 条

[1] Anomalous suppression of superconductivity in Zn-substituted Bi2Sr2Ca1-xYx(Cu1-yZny)2O8+δ [J].