Type I superconductivity in the Dirac semimetal PdTe2

Abstract

The superconductor PdTe${}_2$ was recently classified as a Type II Dirac semimetal, and advocated to be an improved platform for topological superconductivity. Here we report magnetic and transport measurements conducted to determine the nature of the superconducting phase. Surprisingly, we find that PdTe${}_2$ is a Type I superconductor with $T_c=1.64$ K and a critical field ${\mu }_0{H}_c(0)=13.6$ mT. Our crystals also exhibit the intermediate state as demonstrated by the differential paramagnetic effect. For $H>H_c$ we observe superconductivity of the surface sheath. This calls for a close examination of superconductivity in PdTe${}_2$ in view of the presence of topological surface states.

arXiv comment5 pages

References in corpus (17)

• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Classification of topological quantum matter with symmetries
• Type-II Weyl Semimetals
• Topological Materials: Weyl Semimetals
• Dirac semimetal in three dimensions
• Topological superconductors: a review
• Lorentz-violating type-II Dirac fermions in transition metal dichalcogenide PtTe${}_2$
• Majorana Fermions and Topology in Superconductors
• Experimental Realization of Type-II Dirac Fermions in PdTe${}_2$ Superconductor
• Type-II Dirac fermions in the PtSe${}_2$ class of transition metal dichalcogenides
• Nontrivial Berry phase and type II Dirac transport in layered material PdTe2
• Topological superconductivity in Dirac semimetals
• Superconductivity in Weyl metals
• Superconductivity in doped Dirac semimetals
• Type I Superconductivity in YbSb2 Single Crystals
• Composition-induced structural instability and strong-coupling superconductivity in Au1-xPdxTe2
• Type-I superconductivity in KBi2 single crystals

Cited by in corpus (55)

• Fermiology and Superconductivity of Topological Surface States in PdTe${}_2$
• A comprehensive review on topological superconducting materials and interfaces
• Conventional Superconductivity in Type II Dirac Semimetal PdTe${}_2$
• Detailed study on the Fermi surfaces of the type-II Dirac semimetallic candidates PdTe2 and PtTe2
• Vortex end Majorana zero modes in superconducting Dirac and Weyl semimetals
• Two-dimensional topological superconductivity candidate in van der Waals layered material
• Nodeless superconductivity in type-II Dirac semimetal PdTe2: low-temperature London penetration depth and symmetry analysis
• Type-I superconductivity in PdTe${}_2$ probed by $\mu$SR
• Type-I superconductivity in noncentrosymmetric NbGe${}_2$
• Experimental Progress on Layered Topological Semimetals
• CaPtAs: a new noncentrosymmetric superconductor
• Novel self-epitaxy for inducing superconductivity in the topological insulator (Bi1-xSbx)2Te3
• Electron irradiation effects on superconductivity in PdTe${}_2$: an application of a generalized Anderson theorem
• Perspective on the muon-spin rotation/relaxation under hydrostatic pressure
• Electronic transport properties of intermediately coupled superconductors: PdTe2 and Cu0.04PdTe2
• Coexistence of bulk-nodal and surface-nodeless Cooper pairings in a superconducting Dirac semimetal
• Niobium in clean limit: an intrinsic type-I superconductor
• Single full gap with mixed type-I and type-II superconductivity on surface of the type-II Dirac semimetal PdTe2 by point-contact spectroscopy
• Fermi surface, possible unconventional fermions, and unusually robust resistive critical fields in the chiral-structured superconductor AuBe
• Superconductivity under pressure in the Dirac semimetal PdTe2
• New polymorphic phase and rich phase diagram in the PdSe2-xTex system
• Enhanced Superconductivity in the Se-substituted 1T-PdTe${}_2$
• Mixed type I and type II superconductivity due to intrinsic electronic inhomogeneities in the type II Dirac semimetal PdTe2
• Penetration depth study of the type-I superconductor PdTe2
• Superconductivity in Nb2Pd3Te5 and Chemically-Doped Ta2Pd3Te5
• Dirac semimetal PdTe2 temperature-dependent quasiparticle dynamics and electron-phonon coupling
• NbSeTe -A New Layered Transition Metal Dichalcogenide Superconductor
• Dominant $s$-wave superconducting gap in PdTe${}_2$ observed by tunneling spectroscopy on side-junctions
• Intrinsic surface superconducting instability in Type-I Weyl Semimetals
• Observation of Gapped Topological Surface States and Isolated Surface Resonances in PdTe${}_2$ Ultrathin Films
• Magnetic properties of Type I and II Weyl Superconductors
• Superconducting density of states and bandstructure at the surface of the candidate topological superconductor Au2Pb
• Full superconducting gap and type-I to type-II superconductivity transition in single crystalline NbGe2
• Type I superconductivity in Dirac materials
• Structural phases of elemental Gallium: universal relations in type-I superconductors
• Observation of the topological Dirac fermions and surface states in superconducting BaSn3
• Topological Superconductivity in a two-dimensional Weyl SSH model
• Visualization by scanning SQUID microscopy of the intermediate state in the superconducting Dirac semimetal PdTe${}_2$
• Chiral Meissner effect in time-reversal invariant Weyl superconductors
• Topological superconductor candidates PdBi${}_2$Te${}_4$ and PdBi${}_2$Te${}_5$ from a generic ab initio strategy
• Superconducting and structural properties of the type-I superconductor PdTe2 under high pressure
• Anomalous Charge Density Wave State Evolution and Dome-like Superconductivity in CuIr2Te4-xSex Chalcogenides
• Heat capacity of type I superconductivity in the Dirac semimetal PdTe${}_2$
• Detailed magneto-heat capacity analysis of SnAs topological superconductor
• Scattering rate collapse driven by a van Hove singularity in the Dirac semi-metal PdTe${}_2$
• Disorder induced transition from type-I to type-II superconductivity in the Dirac semimetal PdTe${}_2$
• Linear Magnetoresistance and Type-I Superconductivity in $\beta$-IrSn${}_4$
• Type-II superconductivity in the Dirac semimetal PdTe2
• Enhanced, homogeneous type II superconductivity in Cu-intercalated PdTe${}_2$
• Influence of pressure on properties of multi-gap type-I superconductor BeAu
• Superconductivity in Ternary Zirconium Telluride Zr6MTe2 with 3d Transition Metals
• Two-fold anisotropic superconducting state in topological superconductor Sn${}_4$Au
• Pressure evolution of the normal- and superconducting-state properties of the line-nodal material CaSb${}_2$ revealed by ${}^{123}$Sb nuclear quadrupole resonance
• SnAs: a 4K weak type-II superconductor with non-trivial band topology
• Electronic and topological properties of the van der Waals layered superconductor PtTe