MAGNETIC BILAYER COUPLING IN YBA2CU3O7

被引：12
|
作者：
LERCHER, MJ
WHEATLEY, JM
机构：
[1] Research Centre in Superconductivity, University of Cambridge, Cambridge CB3 OHE, Madingley Road
来源：
PHYSICAL REVIEW B | 1994年 / 49卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.49.736
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The spin-fluctuation spectrum of an extended t-J model appropriate to bilayer Y-Ba-Cu-0 is investigated within a renormalized-mean-field approach. Strong antiferromagnetic correlation between bilayers is found.for realistic values of the interplane coupling in a regime where the inplane susceptibility is strongly exchange enhanced even though the antiferromagnetic correlation length is short. The influence of spin pairing on the spin-fluctuation spectrum, in this case via a d-wave order parameter, is included. The model predicts a strong energy dependence of the modulation in the vicinity of the characteristic energy for spin fluctuations.
引用
收藏
页码：736 / 739
页数：4
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