Pressure dependence of the upper critical field of MgB2 and of YNi2B2C

H. Suderow, V. G. Tissen, J. P. Brison +5

We present measurements of H${}_{c2}(T)$ under pressure in MgB${}_2$ and in YNi${}_2$B${}_2$C. The changes in the shape of H${}_{c2}(T)$ are interpreted within current models and show the ev…