Superconductivity in W3Re2C with chiral structure

Abstract

We discover superconductivity in cubic W3Re2C with chiral structure and the superconducting transition temperature Tc is about 6.2 K. Detailed characterizations and analysis indicate that W3Re2C is a bulk type-II BCS superconductor with full isotropic gap. Moreover, first-principles calculations indicate that the electron-phonon coupling primarily arises from interactions between W/Re 5d electronic states and their low-frequency phonons. Furthermore, the breaking of inversion symmetry in W3Re2C facilitates the emergence of Weyl points in the electronic structure. Therefore, W3Re2C can serve as a promising platform for investigating the influences of chiral structure on both superconductivity and band topology.

23 pages, 5 figures

References in corpus (24)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Phonons and related properties of extended systems from density-functional perturbation theory
• Maximally localized Wannier functions: Theory and applications
• WannierTools: An open-source software package for novel topological materials
• Wannier90 as a community code: new features and applications
• Electron-phonon interactions from first principles
• FermiSurfer: Fermi-surface viewer providing multiple representation schemes
• S-wave/spin-triplet order in superconductors without inversion symmetry: Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Edge modes, edge currents, and gauge invariance in $p_x+i{p}_y$ superfluids and superconductors
• CePt3Si: an unconventional superconductor without inversion center
• Unconventional superconductivity in weakly correlated, non-centrosymmetric $\mathrm{M}{\mathrm{o}}_3\mathrm{A}{\mathrm{l}}_2\mathrm{C}$
• Crystal Symmetry, Electron-Phonon Coupling, and Superconducting Tendencies in Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Field dependence of the zero energy density of states around vortices in an anisotropic gap superconductor
• Multiband Superconductivity in Heavy Fermion Compound CePt3Si without Inversion Symmetry: An NMR Study on a High-Quality Single Crystal
• Superconductivity with large upper critical field in noncentrosymmetric Cr-bearing high-entropy alloys
• Vortex avalanches in the non-centrosymmetric superconductor Li2Pt3B
• Unusual behaviours and Impurity Effects in the Noncentrosymmetric Superconductor CePt3Si
• Electronic structure of Li2Pd3B and Li2Pt3B
• Nature and symmetry of the order parameter of the noncentrosymmetric superconductor Li2Pt3B
• Density functional theory study of phase stability, vibrational and electronic properties of $M{o}_{3}A{l}_{2}C$
• Electronic structure, electron-phonon coupling and superconductivity of isotypic noncentrosymmetric crystals Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Superconducting gap symmetry of the noncentrosymmetric superconductor W3Al2C
• Discovery of Li2(Pd,Pt)3B superconductors
• Polar charge density wave in a superconductor with crystallographic chirality