Bloch-Lorentz magnetoresistance oscillations in delafossites

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.

arXiv comment12 pages, 4 figures

References in corpus (11)

• Direct measurement of the coherence length of edge states in the Integer Quantum Hall Regime
• The properties of ultrapure delafossite metals
• Quantum oscillations and high carrier mobility in the delafossite PdCoO${}_2$
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• Unconventional Anomalous Hall Effect in the Metallic Triangular-Lattice Magnet PdCrO2
• Super-geometric electron focusing on the hexagonal Fermi surface of PdCoO${}_2$
• $h/e$ Oscillations in Interlayer Transport of Delafossites
• Hidden kagome-lattice picture and origin of high conductivity in delafossite PtCoO${}_2$
• Modelling the angle-dependent magnetoresistance oscillations of Fermi surfaces with hexagonal symmetry
• Bloch-Lorentz magnetoresistance oscillations in delafossites

Cited by in corpus (2)

• Bloch-Lorentz magnetoresistance oscillations in delafossites
• Layer-Resolved Many-Electron Interactions in Delafossite PdCoO2 from Standing-Wave Photoemission Spectroscopy