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BIBTEX RIS

Magnetization Plateaus of SrCu 2 ( BO 3 ) 2 from a …

2001; American Physical Society; Volume: 87; Issue: 9 Linguagem: Inglês

10.1103/physrevlett.87.097203

ISSN

1092-0145

Autores

Grégoire Misguich, Thierry Jolicœur, S. M. Girvin,

Tópico(s)

Topological Materials and Phenomena

Resumo

The antiferromagnetic Heisenberg model on the frustrated Shastry-Sutherland lattice is studied by a mapping onto spinless fermions carrying one quantum of statistical flux. Using a mean-field approximation these fermions populate the bands of a generalized Hofstadter problem. Their filling leads to the magnetization curve. For SrCu(2)(BO(3))(2) we reproduce plateaus at 1/3 and 1/4 of the saturation moment and predict a new one at 1/2. Gaussian fluctuations of the gauge field are shown to be massive at these plateau values.

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