Affiliation:
1. Delft University of Technology
Abstract
Recent measurements of the out-of-plane magnetoresistance of delafossites (PdCoO_22 and PtCoO_22) 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.
Funder
European Research Council
Horizon 2020
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Subject
General Physics and Astronomy