Charge density wave transport in NbSe3 at low temperatures under high magnetic field

Yu. I. Latyshev (1) , A.P. Orlov (1) , Pierre Monceau (2)

1 IRE - Kotelnikov Institute of Radio Engineering and Electronics
2 NEEL - MagSup - Magnétisme et Supraconductivité

Charge density wave (CDW) depinning and sliding regimes have been studied in NbSe3 at low temperatures down to 1.5 K under magnetic field of 19 T oriented along the c-axis. We found that the threshold field for CDW depinning becomes temperature independent below T (0) a parts per thousand 15 K. Also CDW current to frequency ratio characterizing CDW sliding regime increases by factor 1.7 below this temperature. The results are discussed as a crossover from thermal fluctuation to tunneling CDW depinning at T < T (0). Besides, we found that CDW sliding strongly suppresses the amplitude of Shubnikov-de Haas oscillations of magnetoresistance.

Domaines: Electrons fortement corrélés [cond-mat.str-el]

Yu. I. Latyshev, A.P. Orlov, Pierre Monceau. Charge density wave transport in NbSe3 at low temperatures under high magnetic field. JETP Letters, 2011, 93 (23), pp.99-102. ⟨10.1134/S0021364011020081⟩. ⟨hal-00997866⟩