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Significance The large linear positive magnetoresistance (LPMR) is widely observed in emergent topological materials. Various explanations, including linear band structure, impurity scattering, guiding center motion, or internode scattering, have been… Click to show full abstract
Significance The large linear positive magnetoresistance (LPMR) is widely observed in emergent topological materials. Various explanations, including linear band structure, impurity scattering, guiding center motion, or internode scattering, have been proposed. However, experimentally, this phenomenon is still lacking applicable quantitative description. In this work, we report a magnetic Weyl semimetal CoS2, with the largest LPMR among known magnetic topological materials. To understand the LPMR behavior, we establish an intrinsic model that the slope of the linear MR is determined by the average of the Berry curvature near the Fermi surface and prove this model with experimental data by introducing temperature effect.
Journal Title: Proceedings of the National Academy of Sciences of the United States of America
Year Published: 2022
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