High-Pressure Synthesis of a Massive and Non-Symmorphic Dirac Semimetal Candidate MoP${}_4$

Abstract

Single crystal and polycrystalline samples of MoP${}_4$ with a black-phosphorus-derived structure have been successfully synthesized by a high-pressure technique. The polycrystalline samples show a large positive magnetoresistance and a small negative Seebeck coefficient at low temperatures, reflecting a semi-metallic nature with high-mobility electrons. Consistent with the transport properties, the band structure calculation reveals a semi-metallic state with the presence of two types of Dirac nodes slightly below the Fermi level. The Dirac node along the $\Gamma$-X direction normal to the phosphorus layers is gapped out in the presence of spin-orbit coupling (SOC), whereas the band crossing at the Z-point is immune to SOC because of the non-symmorphic symmetry. This work demonstrates a great potential of phosphorus-based layered Zintl compounds for topological semimetal candidates allowing chemical band engineering.

arXiv comment14 pages, 4 figures, 2 tables

References in corpus (24)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• The electronic properties of graphene
• Advanced capabilities for materials modelling with Quantum ESPRESSO
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Dirac semimetal in three dimensions
• High-throughput electronic band structure calculations: challenges and tools
• Catalogue of Topological Electronic Materials
• Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
• Black phosphorus: narrow gap, wide applications
• Topological nodal line semimetals
• Dirac Semimetals in Two Dimensions
• FermiSurfer: Fermi-surface viewer providing multiple representation schemes
• Topological Nodal Line Semimetals in CaP3 family of materials
• Pressure-induced Lifshitz transition in black phosphorus
• Large magnetoresistance in LaBi: origin of field-induced resistivity upturn and plateau in compensated semimetals
• Superconductivity in metastable phases of phosphorus-hydride compounds under high pressure
• Topological Protected Dirac Cones in Compressed Bulk Black Phosphorus
• Intercalant-independent transition temperature in superconducting black phosphorus
• Elemental Phosphorus: structural and superconducting phase diagram under pressure
• Two-carrier analyses of the transport properties of black phosphorus under pressure
• Anomalous Quantum Transport Properties in Semimetallic Black Phosphorus
• Extremely large magnetoresistance in the hourglass Dirac loop chain metal β-ReO${}_2$
• Field-induced Metal-Insulator Transition in $\beta$-EuP${}_3$
• Robust scheme for magnetotransport analysis in topological insulators

Cited by in corpus (1)

• Role of effective mass anisotropy in realizing a hybrid nodal-line fermion state