Large Anomalous Nernst Effect in a Skyrmion Crystal

Abstract

Thermoelectric properties of a model Skyrmion crystal were theoretically investigated, and it was found that its large anomalous Hall conductivity, corresponding to large Chern numbers induced by its peculiar spin structure leads to a large transverse thermoelectric voltage through the anomalous Nernst effect. This implies the possibility of finding good thermoelectric materials among Skyrmion systems, and thus motivates our quests for them by means of the first-principles calculations as were employed here.

arXiv comment6 pages, 3 figures

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• Rectangular and square skyrmion crystals on a centrosymmetric square lattice with easy-axis anisotropy
• First-principles study on thermoelectric properties of half-Heusler compounds CoMSb(M=Sc, Ti, V, Cr, and Mn)
• Low-Energy Excitations of Skyrmion Crystals in a Centrosymmetric Kondo-Lattice Magnet: Decoupled Spin-Charge Excitations and Nonreciprocity
• Combinatorial tuning of electronic structure and thermoelectric properties in Co${}_2$MnAl${}_{1-x}$Si${}_x$ Weyl semimetals
• Thermoelectric signature of individual skyrmions
• First-principles calculation of anomalous Hall and Nernst conductivity by local Berry phase
• Implementation of Generalized Bloch Theorem Using Linear Combination of Pseudo-Atomic Orbitals
• Phase degree of freedom and topology in multiple-$Q$ spin textures
• Large anomalous Nernst coefficient in an oxide Skyrmion crystal Chern insulator
• Ferrochiral, antiferrochiral, and ferrichiral skyrmion crystals in an itinerant honeycomb magnet
• Theory of Topological Nernst and Thermoelectric Transport in Chiral Magnets
• Thermoelectric effect in kagome lattice enhanced at van Hove singularities
• Unveiling Mysteries of GdRu${}_2$Si${}_2$: 3D Magnetism in a layered like Magnet