Coexistence of non-Abelian chiral spin liquid and magnetic order in a spin-1 antiferromagnet

Article

关键词: MATRIX RENORMALIZATION-GROUP;    HUBBARD-MODEL;    STATES;    PHYSICS;    ANYONS;    FIELD;   

DOI  :  10.1103/PhysRevB.105.155104

来源: SCIE

【 摘 要 】

We study the ground-state properties of a spin-1 Heisenberg model on a square lattice with the first- and second-nearest-neighbor antiferromagnetic couplings J(1) and J(2) and a three-spin scalar chirality term J(chi). Using the density matrix renormalization group calculation, we map out a global phase diagram including various magnetic order phases and an emergent quantum spin liquid phase. The nature of the spin liquid is identified as a bosonic non-Abelian Moore-Read state from the fingerprint of the entanglement spectra and identification of a full set of topological sectors. We further unveil a stripe magnetic order coexisting with this spin liquid. Our results not only establish a rare example of non-Abelian spin liquids in simple spin systems but also demonstrate the coexistence of fractionalized excitations and magnetic order beyond mean-field descriptions.

【 授权许可】

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