Year: 2019
Type: article
Abstract: The magnetoresistance (MR) of a material is typically insensitive to reversing the applied field direction and varies quadratically with magnetic field in the low-field limit. Quantum effects, unusual topological band structures, and inhomogeneities that lead to wandering current paths can induce a cross-over from quadratic to linear MR with increasing magnetic field. Here we explore a series of metallic charge- and spin-density-wave systems that exhibit extremely large positive linear MR. By contrast to other linear MR mechanisms, this effect remains robust down to miniscule magnetic fields of tens of Oersted at low temperature. We frame an explanation of this phenomenon in a semiclassical narrative for a broad category of materials with partially gapped Fermi surfaces due to density waves.
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Science Foundation, U.S. Department of Energy, California Institute of Technology, National High Magnetic Field Laboratory, Cabinet Office, Government of Japan, Okinawa Institute of Science and Technology Graduate University, Office of Science, Japan Society for the Promotion of Science, Division of Materials Research, Basic Energy Sciences, High Magnetic Field Laboratory, Chinese Academy of Sciences, Division of Materials Sciences and Engineering, State of Florida
Awards: G1696679194, Search for New Electronic and Magnetic State in Eu Compounds, G2294341347, G2386482098, G3153794353, G3330702905, G4624992917, G502626589, National High Magnetic Field Laboratory Renewal 2013-2017, Pressure Tuning of Competing Quantum States, Electron correlations and superconductivity in Co compounds
OpenAlex ID: W2964004686