Normal state magnetic properties of superconducting single crystal YNi2B2C

Abstract

The normal state magnetic properties of single crystal YNi2B2C have been investigated by field dependent isothermal magnetization (M) and temperature (T) dependent magnetic susceptibility (M/H equivalent to chi) measurements. The chi (T) data show a T-dependent anisotropic behavior. The chi (T) data is separated by the contributions of impurities, chi (imp), diamagnetic core electrons, chi (core), Van Vleck type interaction, chi (VV), and conduction electron spins, chi (cel). The weakly T-dependence chi (T) is explained by chi (cel), from which the second derivative of density of state at Fermi energy is estimated. The comparison of the Pauli susceptibility, chi (Pauli)(T), from this measurements with the one from electronic band structure calculation is performed.