Berlin 2018 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 47: Poster Session II

MM 47.20: Poster

Mittwoch, 14. März 2018, 18:30–19:45, Poster C

The nonlinear quantum Hall effect in BiTeI — •Jorge Facio¹, Inti Sodemann², Jhih-Shih You¹, Klaus Koepernik¹, Dmitri Efremov¹, and Jeroen van den Brink¹ — ¹IFW-Dresden, Germany — ²Max Planck Institute for the Physics of Complex Systems, Dresden, Germany

The Berry phase has become a central ingredient in our modern understanding of Hall-like phenomena of electrons in crystals. Recently, it has been shown that time-reversal invariant metals that lack inversion symmetry can display a nonlinear version of the Hall effect whose form and strength is controlled by the dipolar distribution of the Berry curvature in momentum space.

In this work, we study the nature of Berry curvature distribution in the three-dimensional giant Rashba material Bismuth Tellurium Iodine (BiTeI). By combining first principle and simple analytical models, we study the evolution Berry curvature dipole with doping and pressure and discuss the experimental conditions for the observation of the quantum non-linear Hall effect in this material.