Field manipulation of Weyl modes in an ideal Dirac semimetal.

ABSTRACT: The emergent Weyl modes with the broken time-reversal symmetry or inversion symmetry provide large Berry curvature and chirality to carriers, offering the realistic platforms to explore topology of electrons in three-dimensional systems. However, the reversal transition between different types of Weyl modes in a single material, which is of particular interest in the fundamental research in Weyl physics and potential application in spintronics, is scarcely achieved due to restriction of inborn symmetry in crystals. Here, by tuning the direction and strength of magnetic field in an ideal Dirac semimetal, Bi₄(Br_0.27I_0.73)₄, we report the realization of multiple Weyl modes, including gapped Weyl mode, Weyl nodal ring, and coupled Weyl mode by the ma

SUBMITTER: Zhong J 

PROVIDER: S-EPMC12663301 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature