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DY: Fachverband Dynamik und Statistische Physik

DY 43: Poster: Quantum Dynamics and Many-Body Systems

DY 43.9: Poster

Thursday, March 30, 2023, 13:00–16:00, P1

Nonlinear magnetoelectric effects in class AIII 3D topological insulators — •Nithin Thomas, Jan Wilhlem, and Ferdinand Evers — Institute of Theoretical Physics, Regensburg University, D-93053 Regensburg, Germany

We investigate nonlinear magnetoelectric effects in class AIII 3D topological insulators[1]. Within the framework of a tight-binding model, we numerically observe a quadratic scaling of wrapping currents with the electric field strength. Starting with the theory of nonlinear Hall effect induced by Berry curvature dipole[2], we develop an analytic description of our numerical findings.

Shinsei Ryu et al 2010 New J. Phys. 12 065010 (2010) Inti Sodemann and Liang Fu, Phys. Rev. Lett. 115, 216806 (2015)