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- W3104681729 abstract "Magnetotransport provides key experimental signatures in Weyl semimetals. The longitudinal magnetoresistance is linked to the chiral anomaly and the transversal magnetoresistance to the dominant charge relaxation mechanism. Axial magnetic fields that act with opposite sign on opposite chiralities facilitate new transport experiments that probe the low-energy Weyl nodes. As recently realized, these axial fields can be achieved by straining samples or adding inhomogeneities to them. Here, we identify a robust signature of axial magnetic fields: an anomalous scaling of the conductance in the diffusive ultraquantum regime. In particular, we demonstrate that the longitudinal conductivity in the ultraquantum regime of a disordered Weyl semimetal subjected to an axial magnetic field increases with both the field strength and sample width due to a spatial separation of charge carriers. We contrast axial magnetic with real magnetic fields to clearly distinguish the different behavior of the conductance. Our results rely on numerical tight-binding simulations and are supported by analytical arguments. We argue that the spatial separation of charge carriers can be used for directed currents in microstructured electronic devices." @default.
- W3104681729 created "2020-11-23" @default.
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- W3104681729 date "2019-11-27" @default.
- W3104681729 modified "2023-10-16" @default.
- W3104681729 title "Anomalous conductance scaling in strained Weyl semimetals" @default.
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- W3104681729 doi "https://doi.org/10.1103/physrevresearch.1.032028" @default.
- W3104681729 hasPublicationYear "2019" @default.
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