期刊
PHYSICAL REVIEW B
卷 105, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.105.075142
关键词
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资金
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-FG02-99ER45790]
- National Science Foundation [PHY-1607611]
We develop a quantum spin-liquid theory for quantum magnets with easy-plane ferromagnetic exchange. The strongly entangled quantum states are obtained by dimer coverings of two-dimensional lattices, forming a triplet resonating valence bond state. This study may help to resolve contradictory statements on certain transition metal chalcogenides.
We develop a quantum spin-liquid theory for quantum magnets with easy-plane ferromagnetic exchange. These strongly entangled quantum states are obtained by dimer coverings of two-dimensional (2D) lattices with triplet S = 1, m(z) = 0 bonds, forming a triplet resonating valence bond (tRVB) state. We discuss the conditions and the procedure to transfer well-known results from conventional singlet resonating valence bond theory to tRVB. Additionally, we present mean field theories of Abrikosov fermions on 2D triangular and square lattices, which can be controlled in an appropriate large-N limit. We also incorporate the effect of charge doping which stabilizes (p + ip)-wave superconductivity. Beyond the pure theoretical interest, our study may help to resolve contradictory statements on certain transition metal chalcogenides, including 1T-TaS2, 1T-TaSe2, as well as CrSiTe3 and CrGeTe3.
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