Field-induced quantum phases in a frustrated spin-dimer model: A sign-problem-free quantum Monte Carlo study

Kwai Kong Ng, Min Fong Yang

研究成果: 期刊稿件文章同行評審

14 引文 斯高帕斯(Scopus)

摘要

The magnetization process of a frustrated spin-1/2 spin-dimer model on a square lattice is investigated by means of a sign-problem-free quantum Monte Carlo algorithm developed recently. Rich field-induced quantum phases are discovered. We find two spin superfluids satisfying different symmetries upon layer permutation. There exist as well two solid phases with distinct checkerboard patterns. More interestingly, a spin supersolid phase possessing both solid and superfluid long-range orders is observed over a finite regime of magnetic fields. We find that this exotic phase can be stabilized only when small but nonzero spin anisotropy is present. Various field-induced transitions among these phases are explored. Our findings may provide guidance to the search of these interesting quantum phases in real frustrated spin-dimer compounds.

原文英語
文章編號064431
期刊Physical Review B
95
發行號6
DOIs
出版狀態已出版 - 28 02 2017
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© 2017 American Physical Society.

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