Evidence of both surface and bulk Dirac bands in ZrSiS and the unconventional magnetoresistance

Abstract

The unconventional magnetoresistance of ZrSiS single crystals is found unsaturated till the magnetic field of 53 T with the butterfly shaped angular dependence. Intense Shubnikov-de Haas oscillations resolve a bulk Dirac cone with a nontrivial Berry phase, where the Fermi surface area is 1.80*10^-3 Å-2 and reaches the quantum limit before 20 T. Angle resolved photoemission spectroscopy measurement reveals an electronic state with the two-dimensional nature around the X point of Brillouin zone boundary. By integrating the density functional theory calculations, ZrSiS is suggested to be a Dirac material with both surface and bulk Dirac bands.

References in corpus (1)

• Butterfly Magnetoresistance, Quasi-2D Dirac Fermi Surfaces, and a Topological Phase Transition in ZrSiS

Cited by in corpus (6)

• Topological nodal-line fermions in ZrSiSe and ZrSiTe
• Nodal-link semimetals
• Tunable Weyl Points in Periodically Driven Nodal Line Semimetals
• Nodal-knot semimetals
• Dirac Line-nodes and Effect of Spin-orbit Coupling in Non-symmorphic Critical Semimetal MSiS (M=Hf, Zr)
• Crossing-Line-Node Semimetals: General Theory and Application to Rare-Earth Trihydrides