By Tessa Cookmeyer and others

At strong repulsion, the triangular-lattice Hubbard model is described by *s=1/2* spins with nearest-neighbor antiferromagnetic Heisenberg interactions and exhibits conventional 120*^\circ* order. Using the infinite density matrix renormalization group and exact diagonalization, we study the effect of the additional four-spin interactions naturally generated from the underlying Mott-insulator physics of electrons... Show more

September 4, 2021

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Four-Spin Terms and the Origin of the Chiral Spin Liquid in Mott Insulators on the Triangular Lattice

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