Regensburg 2022 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 24: Spin Transport and Orbitronics, Spin-Hall Effects

MA 24.1: Vortrag

Mittwoch, 7. September 2022, 15:00–15:15, H37

Interplay between ferroelectricity and orbital angular momentum in a two-dimensional SnTe monolayer — •Dimos Chatzichrysafis^1,2, Dongwook Go^1,3, and Stefan Blügel¹ — ¹Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany — ²Physics Department, RWTH-Aachen University, 52062 Aachen, German — ³Institute of Physics, Johannes Gutenberg University Mainz, 55099 Mainz, Germany

Recent work on Orbitronics has shown that the orbital angular momentum (OAM) plays an important role in transport phenomena. A question that has arisen concerns the exploration of physical mechanisms that can serve as a control knob for the OAM. For that, ferroelectrics comprise the perfect playground. In this talk, we theoretically investigate the interplay between the electrical polarization in 2D SnTe monolayer, the OAM, and its transport effects. Using a tight-binding model we analyze the influence of the ferroelectric polarization on the electronic structure and the OAM texture. Based on this, we show that electric responses of the OAM and its current can be modulated by a ferroelectric order parameter. We believe that our work provides a novel route to controlling the OAM in 2D materials