TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.14.5.119
TI  - Black hole mirages: Electron lensing and Berry curvature effects in inhomogeneously tilted Weyl semimetals
PY  - 2023/05/17
UR  - https://scipost.org/SciPostPhys.14.5.119
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 14
IS  - 5
SP  - 119
A1  - Haller, Andreas
AU  - Hegde, Suraj
AU  - Xu, Chen
AU  - De Beule, Christophe
AU  - Schmidt, Thomas L.
AU  - Meng, Tobias
AB  - We study electronic transport in Weyl semimetals with spatially varying nodal tilt profiles. We find that the flow of electrons can be guided precisely by judiciously chosen tilt profiles. In a broad regime of parameters, we show that electron flow is described well by semiclassical equations of motion similar to the ones governing gravitational attraction. This analogy provides a physically transparent tool for designing tiltronic devices like electronic lenses. The analogy to gravity circumvents the notoriously difficult full-fledged description of inhomogeneous solids. A comparison to microscopic lattice simulations shows that it is only valid for trajectories sufficiently far from analogue black holes. We finally comment on the Berry curvature-driven transverse motion and relate the latter to spin precession physics.
ER  -

@Article{10.21468/SciPostPhys.14.5.119,
	title={{Black hole mirages: Electron lensing and Berry curvature effects in inhomogeneously tilted Weyl semimetals}},
	author={Andreas Haller and Suraj Hegde and Chen Xu and Christophe De Beule and Thomas L. Schmidt and Tobias Meng},
	journal={SciPost Phys.},
	volume={14},
	pages={119},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.14.5.119},
	url={https://scipost.org/10.21468/SciPostPhys.14.5.119},
}