Anisotropy of Magnetothermopower Anomaly in NbSe ₃

Abstract

The magnetothermopower of NbSe3 has been measured below ∼ 90 K in both transverse and longitudinal magnetic fields up to 70 kG. The results show that the transverse field always tends to increase the thermopower and the longitudinal field always tends to decrease it in spite of the carrier kind, except for the cross-over region. The large decrease of thermopower in longitudinal field below ∼25 K does not confirm the model proposed by Balseiro et al.