Pressure induced superconductivity bordering a charge-density-wave state in NbTe4 with strong spinorbit coupling

Abstract

Transition-metal chalcogenides host various phases of matter, such as charge-density wave (CDW), superconductors, and topological insulators or semimetals. Superconductivity and its competition with CDW in low-dimensional compounds have attracted much interest and stimulated considerable research. Here we report pressure induced superconductivity in a strong spin-orbit (SO) coupled quasi-one-dimensional (1D) transition-metal chalcogenide NbTe${}_4$, which is a CDW material under ambient pressure. With increasing pressure, the CDW transition temperature is gradually suppressed, and superconducting transition, which is fingerprinted by a steep resistivity drop, emerges at pressures above 12.4 GPa. Under pressure $p$ = 69 GPa, zero resistance is detected with a transition temperature $T_c$ = 2.2 K and an upper critical field $H_{c2}$= 2 T. We also find large magnetoresistance (MR) up to 102\% at low temperatures, which is a distinct feature differentiating NbTe${}_4$ from other conventional CDW materials.

arXiv commenthttps://rdcu.be/LX8w

References in corpus (25)

• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Titanic Magnetoresistance in WTe2
• High-temperature superconductivity in iron-based materials
• One-Dimensional Fermi liquids
• Superconductivity in CuxBi2Se3 and its implications for pairing in the undoped topological insulator
• Superconductivity in Cu_xTiSe_2
• Odd-Parity Topological Superconductors: Theory and Application to Cu${}_x$Bi${}_2$Se${}_3$
• Electronic crystals: an experimental overview
• Pressure-driven dome-shaped superconductivity and electronic structural evolution in tungsten ditelluride
• Superconductivity emerging from suppressed large magnetoresistant state in WTe2
• Electronic structure basis for the titanic magnetoresistance in WTe${}_2$
• Quantum oscillations, thermoelectric coefficients and the Fermi surface of semi-metallic WTe2
• Signature of strong spin-orbital coupling in the large non-saturating magnetoresistance material WTe2
• Metal-Insulator-Like Behavior in Semimetallic Bismuth and Graphite
• Exotic Superconducting Properties in the Electron-Hole Compensated Heavy Fermion `Semimetal' URu2Si2
• Anisotropic Magnetotransport and Exotic Longitudinal Linear Magnetoresistance in WTe2 Crystals
• Anisotropic giant magnetoresistance in NbSb2
• Drastic pressure effect on the extremely large magnetoresistance in WTe2: quantum oscillation study
• Superconductivity induced by La doping in Sr1-xLaxFBiS2 system
• Extremely Large Magnetoresistance in the Nonmagnetic Metal PdCoO2
• Quantum and classical mode softening near the charge-density-wave/superconductor transition of Cu${}_x$TiSe${}_2$: Raman spectroscopic studies
• Phase Diagram of Electron Doped Dichalcogenides
• K and Mn co-doped BaCd2As2: a hexagonal structured bulk diluted magnetic semiconductor with large magnetoresistance
• Pressure-enhanced superconductivity in Eu${}_3$Bi${}_2$S${}_4$F${}_4$
• Giant Linear Magneto-resistance in Nonmagnetic PtBi2