Chiral Spin Liquid Phase of the Triangular Lattice Hubbard Model: A Density Matrix Renormalization Group Study

By Aaron Szasz, J. Motruk, M. Zaletel, J. Moore. Physical Review X, 2018

152 citations recorded by the source corpus.

Motivated by experimental studies that have found signatures of a quantum spin liquid phase in organic crystals whose structure is well described by the two-dimensional triangular lattice, we study the Hubbard model on this lattice at half filling using the infinite-system density matrix renormalization group (iDMRG) method. On infinite cylinders with finite circumference, we identify an intermediate phase between observed metallic behavior at low interaction strength and Mott insulating spin-ordered behavior at strong interactions. Chiral ordering from spontaneous breaking of time-reversal symmetry, a fractionally quantized spin Hall response, and characteristic level statistics in the entanglement spectrum in the intermediate phase provide strong evidence for the existence of a chiral spin liquid in the full two-dimensional limit of the model.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/262bed44f01f6625d1f7dc281f158a6b1d1d35bc

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In Atomic and Molecular Physics, and Optics

In Condensed Matter Physics

Citations in the corpus

Moiré heterostructures as a condensed-matter quantum simulator (2020, unknown): “conductivity and quantum chiral spin liquids [55].”
The Hubbard Model (2021, background): “DMRG studies of the Hubbard model on the triangular lattice have recently produced evidence of a number of intriguing behaviors (112, 113, 114, 115, 116, 117).”