Magneto-optical Evidence of the Tilting Effect in Coupled Weyl Bands.

ABSTRACT: Theories have revealed the universality of the band tilting effect in topological Weyl semimetals (WSMs) and its implications for the material physical properties. However, the experimental identification of tilted Weyl bands remains less explored. Here, we report the magneto-optical evidence of the tilting effect in WSM niobium phosphide. Specifically, we observe Landau level transitions with rich features that are well reproduced within a model of coupled tilted Weyl points. Our analysis indicates that the tilting effect relaxes the selection rules and leads to transitions that would otherwise be forbidden in the non-tilt case. Additionally, we observe unconventional interband transitions with flat and negative magnetic field dispersions, highlighting the importance of coupling between W

SUBMITTER: Moon S 

PROVIDER: S-EPMC11849037 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature