2016/10/31 by Kwai-Kong Ng, Min-Fong Yang · 22 citations
Mathematics · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Mathematics #Monte Carlo method #Physics #Physics of Superconductivity and Magnetism #Quantum Monte Carlo #Quantum many-body systems #Quantum mechanics #Quantum spin liquid #Spin (aerodynamics) #Spin model #Spin polarization #cond-mat.other #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.95.064431
published in Physical review. B./Physical review. B 95(6) (American Physical Society) · 6 pages, 5 figures, some revisions, changed Figs.1 and 5; accepted for publication in Phys. Rev. B
arxiv created 2017/02/16 · openalex publication_date 2017/02/28 · arxiv updated 2017/03/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.