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Noncollinear twisted RKKY interaction on the optically driven SnTe(001) surface

MPG-Autoren
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Bukov,  Marin
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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2212.10668.pdf
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Zitation

Yarmohammadi, M., Bukov, M., & Kolodrubetz, M. H. (2023). Noncollinear twisted RKKY interaction on the optically driven SnTe(001) surface. Physical Review B, 107(5): 054439. doi:10.1103/PhysRevB.107.054439.


Zitierlink: https://hdl.handle.net/21.11116/0000-000D-0293-A
Zusammenfassung
The nontrivial spin texture on the (001) surface of topological crystalline insulator SnTe hosts exotic scientific importance and spintronic applications. Here, we study the effects of weak Floquet optical driving on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between two magnetic impurities on a doped SnTe(001) surface. Due to peculiar spin-orbit hybridization, we find a noncollinear twisted RKKY interaction with XYZ-Heisenberg, symmetric in-plane, and asymmetric Dzyaloshinskii-Moriya (DM) terms. We see that contributions from the z (x) component of the XYZ-Heisenberg (DM) interaction are dominant for most parameters. The interactions, including DM terms that are responsible for interesting spin textures, require doping in most cases. We propose to modify the interactions in situ via optical control of band structure, and thereby doping. A notable aspect of this control protocol is breaking of electron-hole symmetry, which stems from the DM interaction.