Magnetization Plateaus of SrCu{sub 2}(BO{sub 3}){sub 2} from a Chern-Simons Theory
Journal Article
·
· Physical Review Letters
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{sub 2}(BO{sub 3}){sub 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.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40277490
- Journal Information:
- Physical Review Letters, Vol. 87, Issue 9; Other Information: DOI: 10.1103/PhysRevLett.87.097203; Othernumber: PRLTAO000087000009097203000001; 041135PRL; PBD: 27 Aug 2001; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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