Large linear magnetoresistance in ultraclean SrVO<sub>3</sub>
ORAL
Abstract
Observations of linear magnetoresistance has a near 100-year history with origins ranging from effects of open Fermi surface in polycrystalline metals, pushing materials like bismuth to the quantum limit, to large scale inhomogeneity/defect clusters in silver chalcogenides—such diversity has long given rise to controversy. This talk will focus on the surprising observation of a large non-saturating linear magnetoresistance that appears in ultraclean, molecular beam epitaxy-grown thin films of the correlated metal SrVO3. The unusual nature of this observation is that the linear magnetoresistance appears only when the samples are in the ultraclean limit and sets in far below the quantum limit; this strongly implies that this is an intrinsic feature of the electronic structure. As such both intrinsic effects, coming from the Fermi surface geometry and electron-electron correlations, and extrinsic effects, particularly defect structures common to perovskites, will be discussed.
*Work supported by the Office of Basic Energy Science, U.S. Department of Energy, Divisions of Materials Sciences and Scientific User Facilities
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Presenters
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Matthew Brahlek
- Materials Sciences and Technology Division, Oak Ridge National Laboratory
- Materials Science and Technology Division, Oak Ridge National Laboratory