Pressure-Tuned Point-Contact Spectroscopy of URu2Si2 from Hidden Order   to Antiferromagnetic States: Similarity of the Fermi Surface Gapping
  We report soft point-contact spectroscopy studies of URu2Si2 both in the hidder order (HO) and the large-moment antiferromagnetic (LMAF) states accessed by pressure. In the HO state at ambient pressure, the spectroscopy shows two asymmetric peaks around the Fermi energy that emerge below the hidden order temperature T_{HO}. In the LMAF state at higher pressures, the spectra are remarkably similar to those in the HO state, indicating a similar Fermi surface gapping in the HO and LMAF states and providing a new clue to unraveling the puzzling HO state. 
Xin Lu, F. Ronning, P. H. Tobash, K. Gofryk, E. D. Bauer and J. D.   Thompson
cond-mat.str-el