Quantum spin liquid with emergent chiral order in the triangular-lattice Hubbard model
Bin-Bin Chen, Ziyu Chen, Shou-Shu Gong, D. N. Sheng, Wei Li, Andreas Weichselbaum
Abstract
Despite a plethora of numerical studies, the nature of the quantum spin liquid near the Mott transition in the triangular-lattice Hubbard model remains controversial. Using a careful DMRG analysis on long cylinders up to width 6, the authors identify here a gapped spin liquid with robust chiral long-range correlations. The analysis unveils the need for surprisingly long systems for the spontaneous time-reversal symmetry breaking to occur due to strong open boundary effects. This reconciles previous contradictory results about this quantum spin liquid.
Topics & Concepts
Hubbard modelHexagonal latticeCondensed matter physicsQuantum spin liquidLattice (music)QuantumPhysicsSpin (aerodynamics)Order (exchange)Quantum mechanicsTheoretical physicsAntiferromagnetismSuperconductivitySpin polarizationThermodynamicsElectronBusinessAcousticsFinanceAdvanced Condensed Matter PhysicsQuantum many-body systemsPhysics of Superconductivity and Magnetism