JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.310, no.2, pp.855 - 857
Abstract
Comparative study of U(Ru1-xRhx)(2)Si-2 (x = 0 and 4%) through resistivity, magnetic susceptibility, and Hall coefficient measurements reveals that the coherence temperature, T-coh, of the Rh 4% doped sample clearly decreases by about 10-20% as compared with that of undoped one located around 50 K. Furthermore, T*, a characteristic temperature below which the resistivity shows the T-2 dependence, is also found to decrease by almost the same factor. These findings suggest that the low Rh doping sensitively destroys the itinerant band gap due to the hidden order (HO) through the reduction of the Fermi surface volume in the quasi-particle band. (c) 2006 Elsevier B.V. All rights reserved.