Abstract
We analyze the zero temperature phase diagrams of the spin quantum antiferromagnet on square and triangular lattices with competing nearest and next-nearest exchange interactions as well as biquadratic couplings. We approach the problem from the large limit. Our primary focus is on determining the extent to which the existence and character of any quantum disordered phases can be inferred from this approach.
6 More- Received 31 March 2020
- Accepted 21 May 2020
DOI:https://doi.org/10.1103/PhysRevB.101.214404
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