COMPETITION BETWEEN SPIN-PEIERLS PHASE AND 3-DIMENSIONAL ANTIFERROMAGNETIC ORDER IN CUGE1-XSIXO3

被引：138

作者：

RENARD, JP

LEDANG, K

VEILLET, P

DHALENNE, G

REVCOLEVSCHI, A

REGNAULT, LP

机构：

[1] UNIV PARIS 11,CHIM SOLIDES LAB,CNRS,URA 446,F-91405 ORSAY,FRANCE

[2] CEN,SPSMS,MDN,DEPT RECH FONDAMENTALE MAT CONDENSEE,F-38054 GRENOBLE 9,FRANCE

来源：

EUROPHYSICS LETTERS | 1995年 / 30卷 / 08期

关键词：

D O I：

10.1209/0295-5075/30/8/006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed magnetic-susceptibility measurements and Cu nuclear-magnetic-resonance studies on single crystals of the quasi-one-dimensional antiferromagnet CuGe1-xSixO3, with 0 less-than-or-equal-to x less-than-or-equal-to 0.1. The Si doping has a drastic effect on the spin-Peierls temperature T(SP) which decreases at T(SP) (x)/T(SP) (0) congruent-to 1-50x at low Si concentrations. For x greater-than-or-equal-to 0.005, three-dimensional antiferromagnetic order with an easy axis along the Cu chains takes place below a well-defined Neel temperature T(N). A qualitative interpretation of the phase diagram (T, x) is given.

引用

页码：475 / 480

页数：6

共 25 条

[1]

Bonner, 1985, NATO ASI SER, V140, P157

[2] OBSERVATION OF A SPIN-PEIERLS TRANSITION IN A HEISENBERG ANTIFERROMAGNETIC LINEAR-CHAIN SYSTEM [J].