Dimensional reduction in quantum spin-1/2 system on a 1/7-depleted triangular lattice

Abstract

We study the magnetism of a quantum spin-1/2 antiferromagnet on a maple-leaf lattice which is obtained by regularly depleting 1/7 of the sites of a triangular lattice. Although the interactions are set to be spatially uniform, the ground state shows a stripe Neel order and the temperature dependence of magnetic susceptibility follows that of the one-dimensional XXZ model with a finite spin gap. We examine the nature of frustration by mapping the low energy degenerate manifold of states to the fully packed loop-string model on a dual cluster-depleted honeycomb lattice, finding that the order-by-disorder due to quantum fluctuation characteristic of highly frustrated magnets is responsible for the emergent stripes. The excited magnons split into two spinons and propagate in the one-dimensional direction along the stripe which is reminiscent of the XXZ or Ising model in one dimension. Unlike most of the previously studied dimensional reduction effects, our case is purely spontaneous as the interactions of the Hamiltonian retains a spatially isotropic two-dimensional structure.

14 pages, 14 figures

References in corpus (11)

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• Dimensional reduction at a quantum critical point
• Spinons and triplons in spatially anisotropic frustrated antiferromagnets
• Critical magnetization behaviors of the triangular and Kagome lattice quantum antiferromagnets
• Low Temperature Lanczos Method
• Monte Carlo study of first-order transition in Heisenberg fcc antiferromagnet
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• Quantum antiferromagnet bluebellite comprising a maple-leaf lattice made of spin-1/2 Cu${}^{2+}$ ions
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Cited by in corpus (10)

• Another Exact Ground State of a 2D Quantum Antiferromagnet
• Candidate quantum disordered intermediate phase in the Heisenberg antiferromagnet on the maple-leaf lattice
• Noncoplanar orders and quantum disordered states in maple-leaf (anti)ferromagnets
• Effective spin-1 breathing kagome Hamiltonian induced by the exchange hierarchy in the maple leaf mineral bluebellite
• Spin-half Heisenberg antiferromagnet on a symmetric sawtooth chain: Rotation-invariant Green's functions and high-temperature series
• Candidate quantum spin liquids on the maple-leaf lattice
• Tensor network analysis of the maple-leaf antiferromagnet spangolite
• Spin Nernst and thermal Hall effects of topological triplons in quantum dimer magnets on the maple-leaf and star lattices
• Unconventional orders in the maple-leaf ferro-antiferromagnetic Heisenberg model
• Thermodynamics of the Heisenberg antiferromagnet on the maple-leaf lattice