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arXiv · 2112.05137

Another Exact Ground State of a 2D Quantum Antiferromagnet

Pratyay Ghosh·Tobias Müller·Ronny Thomale
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Abstract

We present the exact dimer ground state of a quantum antiferromagnet on the maple-leaf lattice. A coupling anisotropy for one of the three inequivalent nearest-neighbor bonds is sufficient to stabilize the dimer state. Together with the Shastry-Sutherland Hamiltonian, we show that this is the only other model with an exact dimer ground state for all two-dimensional lattices with uniform tilings.

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Pratyay Ghosh, Tobias Müller, Ronny Thomale. 2021-12-09. Another Exact Ground State of a 2D Quantum Antiferromagnet. https://doi.org/10.1103/physrevb.105.l180412

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