Superconductivity Discovered in Niobium Polyhydride at High Pressures

Abstract

Niobium polyhydride was synthesized at high pressure and high temperature conditions by using diamond anvil cell combined with in situ high pressure laser heating techniques. High pressure electric transport experiments demonstrate that superconducting transition occurs with critical temperature(Tc) 42 K at 187 GPa. The shift of Tc as function of external applied magnetic field is in consistent to the nature of superconductivity while the upper critical field at zero temperature Hc2(0) is estimated to~16.8 Tesla while the GL coherent length ~57 angstrom is estimated. The structure investigation using synchrotron radiation implies that the observed superconductivity may come from Fm-3m phase of NbH3.

References in corpus (16)

• Conventional superconductivity at 203 K at high pressures
• Superconductivity at 250 K in lanthanum hydride under high pressures
• Evidence for superconductivity above 260 K in lanthanum superhydride at megabar pressures
• The metallization and superconductivity of dense hydrogen sulfide
• Pressure induced Superconductivity in Topological Compound Bi2Te3
• Superconductivity at 161 K in Thorium Hydride $Th{H}_{10}$: Synthesis and Properties
• Superconductivity above 200 K Observed in Superhydrides of Calcium
• High-Temperature Superconductivity in Cerium Superhydrides
• On Distribution of Superconductivity in Metal Hydrides
• Superconductivity above 100 K in PH3 at high pressures
• Superconductivity above 70 K observed in lutetium polyhydrides
• Record High Tc Element Superconductivity Achieved In Titanium
• Superconductivity in Zirconium Polyhydrides with Tc above 70 K
• Superconductivity Observed in Tantalum Polyhydride at High Pressure
• Superconductivity above 30 K achieved in dense scandium
• Superconductivity with Tc 116K discovered in antimony polyhydrides

Cited by in corpus (4)

• A-15 type superconducting hydride $L{a}_4{H}_{23}$: Nanograined structure with low strain, strong electron-phonon interaction, and moderate level of nonadiabaticity
• Superconductor discovery in the emerging paradigm of Materials Informatics
• Einstein and Debye temperatures, electron-phonon coupling constant and a probable mechanism for ambient-pressure room-temperature superconductivity in intercalated graphite
• Superconducting Hydride Mg2RhH6 Experimentally Achieved at Lower Pressure