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

H. -J. Mikeska·Asimkumar Ghosh·A. K. Kolezhuk
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Abstract

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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H. -J. Mikeska, Asimkumar Ghosh, A. K. Kolezhuk. 2004-03-21. Field-induced disorder in a gapped spin system with non-magnetic impurities. https://doi.org/10.1103/physrevlett.93.217204

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