Chiral spin liquid and quantum criticality in extended S=1/2 Heisenberg models on the triangular lattice

Article

关键词: RESONATING-VALENCE-BOND;    KAGOME-LATTICE;    GROUND-STATE;    NEEL ORDER;    ANTIFERROMAGNETS;    ANYONS;    PHASE;   

DOI  :  10.1103/PhysRevB.95.035141

来源: SCIE

【 摘 要 】

We investigate the J(1)-J(2) Heisenberg model on the triangular lattice with an additional scalar chirality term and show that a chiral spin liquid is stabilized in a sizable region of the phase diagram. This topological phase is situated in between a coplanar 120 degrees Neel ordered and a noncoplanar tetrahedrally ordered phase. Furthermore we discuss the nature of the spin-disordered intermediate phase in the J(1)-J(2) model. We compare the ground states from exact diagonalization with a Dirac spin liquid wave function and propose a scenario where this wave function describes the quantum critical point between the 120 degrees magnetically ordered phase and a putative Z(2) spin liquid.

【 授权许可】

Free