dc.creatorTomé, Martín
dc.creatorRosales, Héctor Diego
dc.date2021-01-06
dc.date2021-10-15T16:33:40Z
dc.date.accessioned2023-07-15T03:16:20Z
dc.date.available2023-07-15T03:16:20Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/126739
dc.identifierissn:2469-9950
dc.identifierissn:2469-9969
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7465080
dc.descriptionThe topological Hall effect (THE), given by a composite of electric and topologically nontrivial spin texture is commonly observed in magnetic skyrmion crystals. Here we present a study of the THE of electrons coupled to antiferromagnetic skyrmion lattices (AF-SkX). We show that, in the strong Hund coupling limit, topologically nontrivial phases emerge at specific fillings. Interestingly, at low filling an external field controlling the magnetic texture drives the system from a conventional insulator phase to a phase exhibiting the THE. Such behavior suggests the occurrence of a topological transition which is confirmed by a closing of the bulk gap that is followed by its reopening, appearing simultaneously with a single pair of helical edge states. This transition is further verified by the calculation of the Chern numbers and Berry curvature. We also compute a variety of observables in order to quantify the THE, namely, Hall conductivity and the orbital magnetization of electrons moving in the AF-SkX texture.
dc.descriptionInstituto de Física de Líquidos y Sistemas Biológicos
dc.formatapplication/pdf
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectFísica
dc.subjectMagnetic field
dc.subjectPhysics
dc.subjectTopology
dc.subjectHall effect
dc.subjectOrbital magnetization
dc.subjectBerry connection and curvature
dc.subjectMagnetic skyrmion
dc.subjectTexture (cosmology)
dc.subjectTopological order
dc.subjectSkyrmion
dc.titleTopological phase transition driven by magnetic field and topological Hall effect in an antiferromagnetic skyrmion lattice
dc.typeArticulo
dc.typePreprint


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