Dynamical transport properties of NbSe${}_3$ with simultaneous sliding of both charge density waves

Abstract

Measurements of the nonlinear conductivity in NbSe${}_3$ when the high-T and the low-T charge-density waves (CDWs) are simultaneously sliding have been performed. It is shown that the threshold electric field, $E_{t1}$, for depinning the high-T CDW increases 4 - 5 times at the temperature at which the low-T CDW is formed, indicating the strong pinning effect resulting from the interaction between both CDWs. Under application of a radio-frequency (rf) field, Shapiro steps are never observed simultaneously for both CDWs. At the electric field less then one for high-T CDW sliding only Sapiro steps for low-T CDW were observed, and at higher field only Shapiro steps for high-T CDW exist.

5 pages, 6 figures, accepted in PRB

References in corpus (3)

• Electronic crystals: an experimental overview
• Surface Charge Density Wave Transition in NbSe${}_3$
• Transverse conductivity in the sliding CDW state of NbSe_3

Cited by in corpus (6)

• Anomalous metallic state and anisotropic multiband superconductivity in Nb3Pd0.7Se7
• Dynamical properties of bidirectional charge-density-waves in ErTe${}_3$
• Fractal and subharmonic responses driven by surface acoustic waves during charge density wave sliding
• Phase locking and fractional Shapiro steps in collective dynamics of microparticles
• Complexity of Shapiro steps
• Anomalous CDW ground state in Cu${}_2$Se: a wave-like fluctuation of $dc$ I-V curve near 50 K