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Scattering Theory of Chiral Edge Modes in Topological Magnon Insulators
Stefan Birnkammer, Michael Knap, Johannes Knolle +2
Topological magnon insulators exhibit robust edge modes with chiral properties similar to quantum Hall edge states. However, due to their strong localization at the edges, interact…
The landscape of symmetry enhancement in tight-binding models
A. K. Dagnino, A. Corticelli, M. Gohlke +3
Band structures are ubiquitous in condensed matter physics and their symmetries constrain possible degeneracies, topology and response functions across a broad range of different s…
Thermal Hall Effect of Magnons from Many-Body Skew Scattering
Dimos Chatzichrysafis, Alexander Mook
We present a theory of magnonic thermal Hall transport driven by many-body skew scattering. In field-polarized chiral magnets, the Dzyaloshinskii-Moriya interaction induces three-m…
Spontaneous Crystal Thermal Hall Effect in Insulating Altermagnets
Rhea Hoyer, Rodrigo Jaeschke-Ubiergo, Kyo-Hoon Ahn +2
We show that magnetic insulators with a collinear and compensated order can exhibit a thermal Hall effect even at zero magnetic field if they have altermagnetic symmetries. We pred…
Tunable band topology and optical conductivity in altermagnets
Peng Rao, Alexander Mook, Johannes Knolle
We study two-dimensional -wave altermagnetic metals taking into account the presence of substrate-induced Rashba spin-orbit coupling. We consider the altermagnet bandstructure u…
Electrical Non-Hermitian Control of Topological Magnon Spin Transport
Pieter M. Gunnink, Rembert A. Duine, Alexander Mook
Magnonic topological phases realize chiral edge spin waves that are protected against backscattering, potentially enabling highly efficient spin transport. Here we show that the sp…