Observation of Weak-Limit Quasiparticle Scattering via Broadband Microwave Spectroscopy of ad-Wave Superconductor Academic Article uri icon

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abstract

  • There has long been a discrepancy between microwave conductivity measurements in high temperature superconductors and the conductivity spectrum expected in the simplest models for impurity scattering in a d-wave superconductor. Here we present a new type of broadband measurement of microwave surface resistance that finally shows some of the spectral features expected for a d(x2-y2) pairing state. Cusp-shaped conductivity spectra, consistent with weak impurity scattering of nodal quasiparticles, were obtained in the 0.6-21 GHz frequency range in highly ordered crystals of YBa2Cu3O6.50 and YBa2Cu3O6.99.

authors

  • Turner, PJ
  • Harris, R
  • Kamal, Saeid
  • Hayden, ME
  • Broun, DM
  • Morgan, DC
  • Hosseini, A
  • Dosanjh, P
  • Mullins, GK
  • Preston, John Stewart
  • Liang, Ruixing
  • Bonn, DA
  • Hardy, WN

publication date

  • June 13, 2003