Anisotropy of Upper Critical Field near Tc and Magnetic Gap of Superconducting URu2Si2 Single Crystal.

摘要

Studying thermal conductivity and STM spectra in the normal and magnetic phase of superconducting URu2Si2 single crystal, we found, that the magnetic gap, partially opened on the Fermi surface below Neel temperature TN = 17.5 K, is strongly anisotropic: gapped states mainly correspond to tetragonal ab plane.