Where is the spin liquid in maple-leaf quantum magnet?

2024/01/17 by Ghosh, Pratyay · 3 citations
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.2401.09422

Abstract

We investigate the possibility of exotic phenomena, viz. quantum spin liquid (QSL) or deconfined quantum critical point (DQCP), in the spin-(1)/(2) Heisenberg model on the maple-leaf lattice, a geometrically frustrated system formed by hexagons (coupling J_h), triangles (coupling J_t), and dimers (coupling J_d). We identify one promising region, given by J_h > 0 and J_t, J_d < 0, for hosting enticing physics. In this region, the quantum phase diagram of the system exhibits an interplay between Néel order and a gapped dimerized singlet phase. This arrangement holds the possibility of harboring a QSL and a DQCP. Using bond-operator mean-field theory and density matrix renormalization group calculations, we delve into this uncharted territory, revealing tantalizing evidence of the existence of a QSL phase and highlighting its potential as a platform for DQCP.

Cited by

• Thermodynamics of the Heisenberg antiferromagnet on the maple-leaf lattice
• Unconventional orders in the maple-leaf ferro-antiferromagnetic Heisenberg model
• Semi-Dirac spin liquids and frustrated quantum magnetism on the trellis lattice

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