Investigation of Sr2RuO4-Pt contacts in an applied magnetic field

We investigated the spin-triplet superconductor Sr2RuO4 by means of conductance measurements of normal conductor/superconductor point contacts. We present results that show a linear dependence of the excess current as a function of temperature and applied magnetic fields over a wide range of the phase diagram. Applying a magnetic field larger than the upper critical field Bc2 suppresses completely the features related to superconductivity and a conductance minimum at V=0 occurs which becomes more pronounced with increasing field and persists even above Tc up to several K