Nonmagnetic impurities in the spin-1/2 kagome antiferromagnet

被引：21

作者：

Gregor, Karol ^{[1
]}

Motrunich, Olexei I. ^{[1
]}

机构：

[1] CALTECH, Dept Phys, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.77.184423

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Motivated by recent experiments on ZnCU3(OH)(6)Cl-2, we study the inhomogeneous Knight shifts (local susceptibilities) of a spin-1/2 kagome antiferromagnet in the presence of nonmagnetic impurities. Using high temperature series expansion, we calculate the local susceptibility and its histogram down to about T=0.4J. At low temperatures, we explore a Dirac spin liquid proposal and calculate the local susceptibility in the mean field and beyond mean field using Gutzwiller projection, finding the overall picture to be consistent with the NMR experiments.

引用

页数：11

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