Intrinsic nonlinear thermal Hall transport of magnons: A Quantum kinetic theory approach

Autor:	Varshney, Harsh, Mukherjee, Rohit, Kundu, Arijit, Agarwal, Amit
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science Quantum Physics
Zdroj:	Phys. Rev. B. 108, 165412 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.108.165412
Popis:	We present a systematic study of the nonlinear thermal Hall responses in bosonic systems using the quantum kinetic theory framework. We demonstrate the existence of an intrinsic nonlinear boson thermal current, arising from the quantum metric which is a wavefunction dependent band geometric quantity. In contrast to the nonlinear Drude and nonlinear anomalous Hall contributions, the intrinsic nonlinear thermal conductivity is independent of the scattering timescale. We demonstrate the dominance of this intrinsic thermal Hall response in topological magnons in a two-dimensional ferromagnetic honeycomb lattice without Dzyaloshinskii-Moriya interaction. Our findings highlight the significance of band geometry induced nonlinear thermal transport and motivate experimental probe of the intrinsic nonlinear thermal Hall response with implications for quantum magnonics. Comment: 20 pages, and 5 figures; Revised version incorporating suggestions by the PRB referee's. To appear in PRB
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2305.18127 Zobrazit plný text záznamu View this record from Arxiv