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DOI number:10.1063/5.0196220

Title of Paper:Far-field thermal radiation of layered ferromagnetic topological materials

Journal:Journal of Applied Physics

Abstract:High Chern number topological insulators can be obtained in a film of layered magnetic block system theoretically and experimentally. With nonzero Chern numbers, Chern insulators become valuable for fundamental topological physics and for improving next-generation electronic devices. We study energy and angular momentum radiation from layered topological insulators using the Dirac Fermion approach and by Green’s function method. We make a connection between radiation magnitude and topological phase transitions. We find that the
magnetic exchange field, intra-layer coupling, and inter-layer interaction are efficient measures to modify the energy radiation of layered topological materials. Moreover, the magnetic exchange field is indispensable for emitting angular momentum due to the need for breaking time-reversal symmetry.

Indexed by:Journal paper

Document Code:J. Appl. Phys. 135, 115102

Discipline:Natural Science

Document Type:J

Volume:135

Issue:115102

Translation or Not:no

Date of Publication:2024-03-20

Included Journals:SCIE

Co-author:Jian-Sheng Wang