Stable Weyl points, trivial surface states and particle-hole compensation in WP2

Abstract

A possible connection between extremely large magneto-resistance and the presence of Weyl points has garnered much attention in the study of topological semimetals. Exploration of these concepts in transition metal phosphide WP2 has been complicated by conflicting experimental reports. Here we combine angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations to disentangle surface and bulk contributions to the ARPES intensity, the superposition of which has plagued the determination of the electronic structure in WP2. Our results show that while the hole- and electron-like Fermi surface sheets originating from surface states have different areas, the bulk-band structure of WP2 is electron-hole-compensated in agreement with DFT. Furthermore, the detailed band structure is compatible with the presence of at least 4 temperature-independent Weyl points, confirming the topological nature of WP2 and its stability against lattice distortions.

6 pages, 4 figures

References in corpus (8)

• Titanic Magnetoresistance in WTe2
• Electronic structure basis for the titanic magnetoresistance in WTe${}_2$
• The extremely large magnetoresistance in the Candidate Type-II Weyl semimetal MoTe2
• MoTe2 : An uncompensated semimetal with extremely large magnetoresistance
• Large magnetoresistance in type-II Weyl semimetal WP${}_2$
• Fermi surface of the Weyl type-II metallic candidate WP2
• The origin of the turn-on phenomenon in Td-MoTe2
• Charge density wave instabilities of type-II Weyl semimetals in a strong magnetic field

Cited by in corpus (16)

• Weyl, Dirac and high-fold chiral fermions in topological quantum materials
• Departure from the Wiedemann-Franz Law in WP${}_2$ Driven by Mismatch in $T$-square Resistivity Prefactors
• Observation of Weyl nodes in robust type-II Weyl semimetal WP2
• Microscopic Origins of Hydrodynamic Transport in Type-II Weyl Semimetal WP${}_2$
• Spin- and angle-resolved photoemission on topological materials
• Extremely large magnetoresistance from electron-hole compensation in the nodal loop semimetal ZrP${}_2$
• Lorentz ratio of a compensated metal
• Charge density wave induced nodal lines in LaTe${}_3$
• Hydrodynamic electron flow in a Weyl semimetal slab: Role of Chern-Simons terms
• Nonlocal transport in Weyl semimetals in the hydrodynamic regime
• Strong and Tunable Electrical-Anisotropy in Type-II Weyl Semimetal Candidate WP2 with Broken Inversion Symmetry
• Hydrodynamics of Fermi arcs: Bulk flow and surface collective modes
• Effect of topology on quasi-particle interactions in the Weyl semimetal WP${}_2$
• Butterfly-like anisotropic magnetoresistance and angle-dependent Berry phase in Type-II Weyl semimetal WP2
• Quantum Oscillations and Magnetoresistance in Type-II Weyl Semimetals - Effect of a Field Induced Charge Density Wave
• Wavefunction-Free Approach for Predicting Nonlinear Responses in Weyl Semimetals