Extension of a theorem on antiferromagnetism to include biquadratic exchange
- 1 June 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 13 (11) , 4875-4876
- https://doi.org/10.1103/physrevb.13.4875
Abstract
Sufficient conditions are found under which the exact ground-state total spin is zero for a spin system characterized by bilinear and biquadratic exchange.Keywords
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