Tuning bulk topological magnon properties with light-induced magnons
Although theoretical modelling and inelastic neutron scattering measurements have indicated the presence of topological magnon bands in multiple quantum magnets, experiments remain unable to detect signal of magnon thermal Hall effect in the quantum magnets, which is a consequence of magnons cond...
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sg-ntu-dr.10356-1716392023-11-06T15:35:26Z Tuning bulk topological magnon properties with light-induced magnons Bhowmick, Dhiman Sun, Hao Yang, Bo Sengupta, Pinaki School of Physical and Mathematical Sciences Science::Physics Ferromagnetism Bulk Topological Magnons Although theoretical modelling and inelastic neutron scattering measurements have indicated the presence of topological magnon bands in multiple quantum magnets, experiments remain unable to detect signal of magnon thermal Hall effect in the quantum magnets, which is a consequence of magnons condensation at the bottom of the bands following Bose Einstein statistics as well as the concentration of Berry curvature at the higher energies. In a recent work, Malz et al.[Nature Communications 10, 3937 (2019)] have shown that topological magnons in edge states in a finite sample can be amplified using tailored electromagnetic fields. We extend their approach by showing that a uniform electromagnetic field can selectively amplify magnons with finite Berry curvature by breaking inversion symmetry of a lattice. Using this approach, we demonstrate the generation of bulk topological magnons in a Heisenberg ferromagnet on the breathing kagome lattice and the consequent amplification of thermal Hall effect. Ministry of Education (MOE) National Research Foundation (NRF) Published version Y.B. would like to acknowledge the support by the National Research Foundation, Singapore under the NRF fellowship award (NRF-NRFF12-2020-005). P.S. acknowledges financial support from the Ministry of Education, Singapore through MOE2019-T2-002-119. 2023-11-02T01:14:55Z 2023-11-02T01:14:55Z 2022 Journal Article Bhowmick, D., Sun, H., Yang, B. & Sengupta, P. (2022). Tuning bulk topological magnon properties with light-induced magnons. Physical Review B, 107(21), 214401-. https://dx.doi.org/10.1103/PhysRevB.107.214401 1098-0121 https://hdl.handle.net/10356/171639 10.1103/PhysRevB.107.214401 2-s2.0-85163509107 21 107 214401 en NRF-NRFF12-2020-005 MOE2019-T2-002-119 Physical Review B © 2023 American Physical Society. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1103/PhysRevB.107.214401 or URL link. application/pdf |
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Science::Physics Ferromagnetism Bulk Topological Magnons Bhowmick, Dhiman Sun, Hao Yang, Bo Sengupta, Pinaki Tuning bulk topological magnon properties with light-induced magnons |
description |
Although theoretical modelling and inelastic neutron scattering measurements
have indicated the presence of topological magnon bands in multiple quantum
magnets, experiments remain unable to detect signal of magnon thermal Hall
effect in the quantum magnets, which is a consequence of magnons condensation
at the bottom of the bands following Bose Einstein statistics as well as the
concentration of Berry curvature at the higher energies. In a recent work, Malz
et al.[Nature Communications 10, 3937 (2019)] have shown that topological
magnons in edge states in a finite sample can be amplified using tailored
electromagnetic fields. We extend their approach by showing that a uniform
electromagnetic field can selectively amplify magnons with finite Berry
curvature by breaking inversion symmetry of a lattice. Using this approach, we
demonstrate the generation of bulk topological magnons in a Heisenberg
ferromagnet on the breathing kagome lattice and the consequent amplification of
thermal Hall effect. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Bhowmick, Dhiman Sun, Hao Yang, Bo Sengupta, Pinaki |
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Article |
author |
Bhowmick, Dhiman Sun, Hao Yang, Bo Sengupta, Pinaki |
author_sort |
Bhowmick, Dhiman |
title |
Tuning bulk topological magnon properties with light-induced magnons |
title_short |
Tuning bulk topological magnon properties with light-induced magnons |
title_full |
Tuning bulk topological magnon properties with light-induced magnons |
title_fullStr |
Tuning bulk topological magnon properties with light-induced magnons |
title_full_unstemmed |
Tuning bulk topological magnon properties with light-induced magnons |
title_sort |
tuning bulk topological magnon properties with light-induced magnons |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/171639 |
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