Chiral Spin Textures Driven by Emergent Spin-Orbit Interaction: A Numerical Study
arxiv(2024)
摘要
We explore numerically the intricate interplay between Berry phases in both
real and momentum spaces within itinerant magnets. This interplay manifests as
an emergent spin-orbit coupling, where charge carriers occupying a Berry-curved
band generate an orbital magnetization, inducing a pseudo-magnetic field
originating in chiral spin textures. Using density-matrix-renormalization-group
techniques, we demonstrate that switching on a band Berry curvature in a
metallic ferromagnetic phase results in chiral magnetic textures. Furthermore,
employing a two-leg strip geometry, we establish a connection between charge
and spin chirality, further supporting this emergent spin-orbit interaction.
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