Phys. Rev. Lett. 67, 2846–2849 (1991)Poincaré sections of charge-density-wave dynamics: Mode lockingReceived 22 April 1991; published in the issue dated 11 November 1991 This Letter reports the first measurements of Poincaré sections of charge-density-wave (CDW) dynamics. High-quality crystals of NbSe3 were excited by combined dc and ac currents. Mode-locked and -unlocked behavior are identified by Poincaré sections consisting of points and closed curves, respectively. We analyze our results in terms of a dynamical phase transition. We argue that multiply degenerate attractors exist in subharmonic mode-locked phases. Dynamics of such phases are dominated by domain walls separating sections of the CDW with different attractors. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.67.2846
DOI:
10.1103/PhysRevLett.67.2846
PACS:
72.15.Nj, 05.45.+b
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