Field-induced disorder in a gapped spin system with non-magnetic impurities

Details Field-induced disorder in a gapped spin system with non-magnetic impurities Field-induced disorder in a gapped spin system with non-magnetic impurities

2004-03-21

arxiv.org/abs/cond-mat/0403537v1

Phys. Rev. Lett. v.93, 217204 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

4 Revtex pages, 2 figures

Scientific paper

10.1103/PhysRevLett.93.217204

We study S=1/2 dimers which are weakly coupled by three-dimensional antiferromagnetic interactions J'. It is commonly known that doping with non-magnetic impurities immediately induces a long-range Neel order. We show that application of an external magnetic field H may drive the system back to a disordered phase. We discuss the zero temperature phase diagram in the (H,J') plane and we propose suggestions for experiments.

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