• DocumentCode
    3325020
  • Title

    Chaos in YBa2Cu3O7?

  • Author

    Hickman, H. ; Gut, G. ; Chen, T.M. ; Cottle, J.G.

  • Author_Institution
    South Florida Univ., Tampa, FL, USA
  • fYear
    1989
  • fDate
    9-12 Apr 1989
  • Firstpage
    1055
  • Abstract
    The authors report that they have observed deterministic chaos while attempting to measure low-frequency electrical noise in bulk YBa 2Cu3O7. The current induced excess noise in bulk YBa2Cu3O7 varied as 1/f with frequency but the noise levels were low. Depending on the magnitude of measuring current, the excess noise spectrum would fall below the background noise spectrum between 10 and 300 Hz. The signal analyzer used displays data out to 100 kHz, but usually only background appeared in the full-range spectrum. Once in a while, however, the 1-100-kHz spectrum would erupt into a panoply of closely spaced, irregular peaks. Such behavior is strongly suggestive of the period-doubling route to chaos. The power spectrum and Poincare section obtained while passing DC current through bulk YBa2Cu3 O7 are displayed
  • Keywords
    barium compounds; chaos; electric noise measurement; high-temperature superconductors; yttrium compounds; 10 to 300 Hz; Poincare section; YBa2Cu3O7; background noise spectrum; current induced excess noise; deterministic chaos; excess noise spectrum; high temperature superconductor; low-frequency electrical noise; period-doubling route; power spectrum; signal analyzer; Background noise; Chaos; Current measurement; Data analysis; Electric variables measurement; Frequency; Low-frequency noise; Noise level; Noise measurement; Signal analysis;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Southeastcon '89. Proceedings. Energy and Information Technologies in the Southeast., IEEE
  • Conference_Location
    Columbia, SC
  • Type

    conf

  • DOI
    10.1109/SECON.1989.132570
  • Filename
    132570
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3325020