Klein tunneling and magnetoresistance ofp−njunctions in Weyl semimetals

2016/05/31 by Songci Li, A. V. Andreev, B. Z. Spivak +1
Materials Science · Physics and Astronomy · #2D Materials and Applications #Condensed matter physics #Conductance #Graphene research and applications #Magnetic field #Magnetoresistance #Physics #Quantum mechanics #Quantum tunnelling #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.94.081408

published as Phys. Rev. B 94, 081408 (2016) · published version, 6 pages (including appendix) and 2 figures

openalex created_date 2016/06/24 · arxiv created 2016/08/15 · openalex publication_date 2016/08/15 · arxiv updated 2016/08/24 · openalex updated_date 2026/08/05

Abstract

We study the zero temperature conductance and magnetoconductance of ballistic p\text\ensuremath-n junctions in Weyl semimetals. Electron transport is mediated by Klein tunneling between the n and p regions. The chiral anomaly that is realized in Weyl semimetals plays a crucial role in the magnetoconductance of the junction. With the exception of field orientations where the angle between B and the junction plane is small, magnetoconductance is positive and linear in B at both weak and strong magnetic fields. In contrast, magnetoconductance in conventional p\text\ensuremath-n junctions is always negative.

Citations

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