Topological spin liquid phase in a low-dimensional organic molecular compound

Abstract

We report the discovery of a correlated insulator with a bulk gap at two-thirds filling in a geometrically frustrated Hubbard model that describes the low-energy physics of Mo${}_3$S${}_7$(dmit)${}_3$. This is very different from the Mott insulator expected at half-filling. We show that the insulating phase, which persists even for very weak electron-electron interactions ($U$), is adiabatically connected to the Haldane phase and is consistent with experiments on Mo${}_3$S${}_7$(dmit)${}_3$

4+epsilon pages; accepted by PRL

References in corpus (5)

• The density-matrix renormalization group in the age of matrix product states
• Quantum frustration in organic Mott insulators: from spin liquids to unconventional superconductors
• String order and symmetries in quantum spin lattices
• Quantum phase transitions of the asymmetric three-leg spin tube
• Low-energy effective theories of the two-thirds filled Hubbard model on the triangular necklace lattice

Cited by in corpus (18)

• Phase Diagram of the Spin-$1/2$ Triangular $J_1$-$J_2$ Heisenberg Model on a 3-leg Cylinder
• Emergence of quasi-one-dimensional physics in Mo${}_3$S${}_7$(dmit)${}_3$, a nearly-isotropic three-dimensional molecular crystal
• Heisenberg and Dzyaloshinskii-Moriya interactions controlled by molecular packing in tri-nuclear organometallic clusters
• Magnetic end-states in a strongly-interacting one-dimensional topological Kondo insulator
• Flat-band solutions in $D$-dimensional decorated diamond and pyrochlore lattices: Reduction to molecular problem
• Haldane insulator protected by reflection symmetry in the doped Hubbard model on the three-legged ladder
• Spin-orbit coupling in {Mo${}_3$S${}_7$(dmit)${}_3$}
• Hidden Magnetism in Periodically Modulated One Dimensional Dipolar Fermions
• Spin-$0$ Mott insulator to metal to spin-$1$ Mott insulator transition in the single-orbital Hubbard model on the decorated honeycomb lattice
• One-dimensional repulsive Hubbard model with mass imbalance: Orders and filling anomaly
• Topological quantum phase transition driven by anisotropic spin-orbit coupling in trinuclear organometallic coordination crystals
• Multiple insulating phases due to the interplay of strong correlations and lattice geometry in a single-orbital Hubbard model
• Symmetry-protected adiabatic quantum transistors
• Effects of anisotropy in spin molecular-orbital coupling on effective spin models of trinuclear organometallic complexes
• Triplet superconductivity in coupled odd-gon rings
• SU(2)-SU(4) Kondo Crossover and Emergent Electric Polarization in a Triangular Triple Quantum Dot
• Antisymmetric Spin-Orbit Coupling Effect on Kondo-Induced Electric Polarization in a Triangular Triple Quantum Dot
• Persistent Haldane Phase in Carbon Tetris Chains