Superconductivity of VN under pressure

Abstract

The superconducting transition temperature (${T}_{c}$) for VN has been determined as a function of hydro-static pressure up to 17 kbar. Similar to V metal, ${T}_{c}$ increases monotonically in this pressure range, except the rate of increase $\frac{\ensuremath{\partial}{T}_{c}}{\ensuremath{\partial}P}$ for VN is even stronger. The upper critical field of VN has also been measured. The results are discussed in conjunction with the effects due to spin fluctuation.