Record-Breaking Magnetoresistance at the Edge of a Microflake of Natural Graphite
arXiv:1911.05612 · doi:10.1002/adem.201900991
Abstract
Placing several electrodes at the edge of a micrometer-size Sri Lankan natural graphite sample at distances comparable to the size of the internal crystalline regions, we found record values for the change of the resistance with magnetic field. At low temperatures and at T the magnetoresistance (MR) reaches %. The MR values exceed by far all earlier reported ones for graphite and they are comparable or even larger (at K) than the largest reported in solids including the Weyl semimetals. The origin of this large MR lies in the existence of highly conducting 2D interfaces aligned parallel to the graphene planes.
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