Magnetic field enhancement of the Hall effect anomalies in quantum critical point CeCu5.9Au0.1

Hall effect of exemplary solid solution CeCu5.9Au0.1 with non-Fermi-liquid behavior has been studied by a technique with a sample rotation in magnetic field at temperatures 1.8-300K. It was shown that Hall coefficient RH(T) for the polycrystalline samples of CeCu5.9Au0.1 is equal to RH(T) values obtained in studies of single crystals for I001 and H010 at 10K < T < 70K. Dramatic changes of the Hall effect in the quantum critical point (QCP) compound have been detected at low temperatures in magnetic field up to 70kOe. At T < T*approx 24K additionally to the main term rhoH1()cos in the Hall resistivity the second angular harmonic contribution rhoH2()cos2 has been established for CeCu5.9Au0.1.