Nonmagnetic impurities in two- and three-dimensional Heisenberg antiferromagnets
Journal Article
·
· Physical Review, B: Condensed Matter
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon (Hong Kong)
In this paper we study in a large-{ital S} expansion the effects of substituting spins by nonmagnetic impurities in two- and three-dimensional Heisenberg antiferromagnets in a weak magnetic field. In particular, we demonstrate a mechanism where magnetic moments are induced around nonmagnetic impurities when magnetic field is present. As a result, Curie-type behavior in magnetic susceptibility can be observed well below the N{acute e}el temperature, in agreement with what is observed in La{sub 2}Cu{sub 1{minus}{ital x}}Zn{sub {ital x}}O{sub 4} and Sr(Cu{sub 1{minus}{ital x}}Zn{sub {ital x}}){sub 2}O{sub 3} compounds. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 388318
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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