Scaling near a "quantum" phase transition: An analysis of the susceptibility and of the specific heat of Ce(Ru1-xRhx)(2)Si-2

The usual scaling equations at a phase transition, employed out of their us ual validity range, with T-c a negative constant, fit the susceptibility an d the specific heat of these systems of the Non-Fermi Liquid (N.F.L.) windo w (0.4 less than or equal to x less than or equal to 0.6) where no long ran ge order is observed in Ce(Ru1-xRhx)(2)Si-2. On either side of this window, the same equations also fit the susceptibility of these systems which orde r, provided the temperature is larger than the Neel temperature T-N. The ex ponents gamma depend on x but seem to approach universal values for these c oncentrations of the N.F.L. window where T-N(x) cancels.