Details

Autor(en) / Beteiligte

• Zybtsev, S. G.
• Pokrovskii, V. Ya

Titel

Coherence of a sliding charge-density wave stimulated by asynchronous rf irradiation

Ist Teil von

• Physical review. B, Condensed matter and materials physics, 2013-09, Vol.88 (12), Article 125144

Erscheinungsjahr

2013

Quelle

APS - PROLA

Beschreibungen/Notizen

• We show that rf irradiation drastically increases coherence of the charge-density wave (CDW) depinning and sliding in the electric field for NbS sub(3) (phase II), TaS sub(3), and (TaSe sub(4)) sub(2)l. The effect is observed in the range of the CDW currents at which the fundamental frequencies are well below the frequency of the irradiation. The result is evident from the shape of I-V curves, Shapiro steps, and noise spectra. We treat the effect in terms of the rf-assisted relaxation of metastable states forming at CDW sliding. The rf irradiation can be helpful in experiments, where utmost coherence of the CDW transport is needed, e.g., in studies of the Shapiro steps, expanding the ranges of their observation.