Quantum phase transition in the frustrated Heisenberg antiferromagnet
- 1 November 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 50 (18) , 13821-13824
- https://doi.org/10.1103/physrevb.50.13821
Abstract
Using the model, we present a description of quantum phase transition from Néel ordered to the spin-liquid state based on the modified spin-wave theory. The general expression for the gap in the spectrum in the spin-liquid phase is given.
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