ANGULAR-DEPENDENCE OF THE MAGNETORESISTANCE OF TISI2 SINGLE-CRYSTALS

We measured the transverse magnetoresistance Delta rho/rho of good qua lity TiSi2 single crystals at low temperatures (4.2 less than or equal to T less than or equal to 112 K) in magnetic fields up to 7.8 Tesla, Single crystals were produced by a modified Czochralski pulling techn ique and they have low residual resistivity (typically rho(4.2 K) = 0. 15 mu Omega . cm) and high residual resistance ratio (typically RRR > 50). The angular dependence of magnetoresistance shows either minima o r maxima when the magnetic field is parallel to the principal crystall ographic axes. At high fields (B > 1 T) we found that the magnetoresis tance has a magnetic field dependence weaker than the B-2 law expected for compensated metals. At 7.8 T, the values of omega(c) tau obtained are of the order of unity, The Kohler scaling rule is observed within three orders of magnitude of the reduced parameter B/rho (where rho i s the zero field resistivity measured between 4.2 and 112 K).