HIDDEN WEAK FERROMAGNETISM IN SLIGHTLY DOPED ANTIFERROMAGNETS

被引：0
|
作者：
KRASNITZ, A [1 ]
KOVNER, A [1 ]
机构：
[1] TEL AVIV UNIV,SCH PHYS & ASTRON,RAYMOND & BEVERLY SACKLER FAC EXACT SCI,IL-69978 TEL AVIV,ISRAEL
来源：
PHYSICAL REVIEW B | 1990年 / 41卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.41.547
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The slightly doped Hubbard model at finite temperature is analyzed in the spin-wave expansion. It is found that in d=2 weak uniform magnetization perpendicular to the staggered magnetization is present for any finite doping fraction. In d=3 there is no net magnetization for doping fractions smaller than some critical one. We suggest that this mechanism can be responsible for recent experimental observations of in-plane spin canting in La2CuO4. © 1990 The American Physical Society.
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页码：547 / 552
页数：6
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