Quantum correlation and magnon Hall conductivity in trimerized Lieb lattice ferromagnets

L.S. Lima

Physica A: Statistical Mechanics and its Applications, 2025, vol. 672, issue C

Abstract: Quantum correlation, magnon Hall conductivity and spin Nernst coefficient are studied on trimerized Lieb lattice ferromagnet, with out-of-plane Dzyaloshinskii–Moriya antisymmetric spin coupling (DMI) and single ion anisotropy. We get the behavior of the von Neumann entropy (VN) and entanglement negativity as a function of the DMI interaction strength, with aim to analyze the influence of magnon bands on quantum correlation and entanglement. This due to the fact that the opening of the gap in the spectrum generates a large effect on quantum entanglement quantifiers as von Neumann entropy and entanglement negativity. Besides, we have studied the transversal magnon Hall conductivity of the system, where we analyze the influence of the DMI interaction and temperature on magnon Hall conductivity and spin Nernst coefficient.

Keywords: Quantum entanglement; Lieb lattice; Ferromagnets (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:672:y:2025:i:c:s0378437125003292

DOI: 10.1016/j.physa.2025.130677

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