Physical review. B, Condensed matter · 1984 · 82 citations · 11 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMaterials PhysicsSolid State PhysicsMagnetic Properties Of SolidsMagnetic SusceptibilityMagnetism Of Inorganic CompoundsStrongly Correlated Electron SystemsSuperconducting MaterialsElectrical ResistivityReactive SputteringSputteringSputtering ProcessesSputtering TechniquesSuperconducting GapSuperconducting Properties
The near stoichiometric compound ${\mathrm{VN}}_{x}$ with NaCl structure has been prepared in two different forms: (1) by reacting V foils directly with pure ${\mathrm{N}}_{2}$, and (2) by reactive sputtering. The magnetic susceptibility and electrical resistivity data of ${\mathrm{VN}}_{x}$ are consistent with the spin-fluctuation view proposed for this material. Superconducting tunneling results indicate that ${\mathrm{VN}}_{x}$ is a strong-coupled superconductor with $\frac{2\ensuremath{\Delta}}{{\ensuremath{\kappa}}_{B}{T}_{c}}\ensuremath{\simeq}3.92$.
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