Bloch-Lorentz magnetoresistance oscillations in delafossites
Kostas Vilkelis, Lin Wang, Anton Akhmerov
SciPost Phys. 15, 019 (2023) · published 20 July 2023
- doi: 10.21468/SciPostPhys.15.1.019
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Abstract
Recent measurements of the out-of-plane magnetoresistance of delafossites (PdCoO$_2$ and PtCoO$_2$) observed oscillations closely resembling the Aharonov-Bohm effect. Here, we show that the magnetoresistance oscillations are explained by the Bloch-like oscillations of the out-of-plane electron trajectories. We develop a semiclassical theory of these Bloch-Lorentz oscillations and show that they are a consequence of the ballistic motion and quasi-2D dispersion of delafossites. Our model identifies the sample wall scattering to be the most likely factor limiting the visibility of these Bloch-Lorentz oscillations in existing experiments.
Authors / Affiliation: mappings to Contributors and Organizations
See all Organizations.- 1 Kostas Vilkelis,
- 1 Lin Wang,
- 1 Anton R. Akhmerov