Spatial and temporal correlations in CDW dynamics

ORAL

Abstract

Noise phenomena associated with the collective mode provide a powerful probe of charge-density-wave (CDW) dynamics. We have developed a setup to allow measurements of spatial and temporal correlations in the noise on length scales of hundreds of microns at frequencies of up to 1 GHz. Details of the electric field, temperature and sample quality dependence of these correlations will be discussed. Our goal is to observe long-sought evidence for critical dynamics as the depinning transition is approached from above.

*This work is supported through NSF DMR 04-05500

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Authors

  • Zachary M. Stum

  • Abdel Isakovic

    • Physics Dept., LASSP, Cornell University
    • Cornell University

  • Robert Thorne

    • Cornell University
    • Physics Department, Cornell University, Ithaca, NY, 14853-2501
    • Physics Dept., LASSP, Cornell University
    • Physics Department, LASSP, Cornell University, Ithaca, NY
    • Laboratory of Applied and Solid State Physics, Physics Department, Cornell University