Pressure and doping dependence of Hall effect and effective mass in V2O3

We present results of electrical resistivitity and Hall effect measurements on single crystalline V2-yO3 as a function of temperature, pressure and do ping y. The pressure dependence of the Hall effect suggests an interpretati on in terms of spin fluctuations, which is also consistent with the tempera ture dependence of the electrical resistivity rho, If a T-2 fit is applied to rho at low temperatures a saturation rather than a divergence of the cor responding effective mass results as the metal-insulator transition is appr oached. (C) 2001 Elsevier Science B.V. All rights reserved.