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29 March 2024
 
  » arxiv » cond-mat/0111353

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Observation of Weak-Limit Quasiparticle Scattering via Broadband Microwave Spectroscopy of a d-Wave Superconductor
P.J. Turner ; R. Harris ; Saeid Kamal ; M.E. Hayden ; D.M. Broun ; D.C. Morgan ; A. Hosseini ; P. Dosanjh ; G. Mullins ; J.S. Preston ; Ruixing Liang ; D.A. Bonn ; W.N. Hardy ;
Date 20 Nov 2001
Journal Phys. Rev. Lett., 90, 237005, 2003.
Subject Superconductivity | cond-mat.supr-con
AbstractThere 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_{x^2-y^2} 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 YBa_2Cu_3O_{6.50} and YBa_2Cu_3O_{6.99}.
Source arXiv, cond-mat/0111353
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