Candidate quantum disordered intermediate phase in the Heisenberg antiferromagnet on the maple-leaf lattice

Abstract

Quantum antiferromagnets on geometrically frustrated lattices have long attracted interest for the formation of quantum disordered states and the possible emergence of quantum spin liquid (QSL) ground states. Here we turn to the nearest-neighbor spin-$1/2$ Heisenberg antiferromagnet on the maple-leaf lattice, which is known to relieve frustration by the formation of canted $120^{\circ }$ magnetic order or valence bond crystal order when varying the bond anisotropy. Employing a pseudo-fermion functional renormalization group approach to assess its ground state phase diagram in detail, we present evidence for a QSL regime sandwiched between these two limiting phases. The formation of such a QSL might signal proximity to a possible deconfined quantum critical point from which it emerges, and that is potentially accessible by tuning the exchange couplings. Our conclusions are based on large-scale simulations involving a careful finite-size scaling analysis of the behavior of magnetic susceptibility and spin-spin correlation functions under renormalization group flow.

7 pages, 6 figures

References in corpus (5)

• The density-matrix renormalization group in the age of matrix product states
• "Deconfined" quantum critical points
• Quantum criticality beyond the Landau-Ginzburg-Wilson paradigm
• Intertwined nematic orders in a frustrated ferromagnet
• Quantum paramagnetism and helimagnetic orders in the Heisenberg model on the body centered cubic lattice

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• Chiral crossroads in $\mathrm{H}{\mathrm{o}}_3\mathrm{Sc}{\mathrm{O}}_6$: a tale of frustration in maple leaf lattice
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• 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
• Semi-Dirac spin liquids and frustrated quantum magnetism on the trellis lattice
• Thermodynamics of the Heisenberg antiferromagnet on the maple-leaf lattice
• Spin excitation of the Heisenberg antiferromagnet with frustration: from the bounce-lattice antiferromagnet through the maple-leaf-lattice antiferromagnet to the exact-dimer system
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