Nodal Quasiparticle Lifetime in the Superconducting State of Bi2Sr2CaCu2O8+δ

J. Corson, J. Orenstein, Seongshik Oh, J. O'Donnell, and J. N. Eckstein
Phys. Rev. Lett. 85, 2569 – Published 18 September 2000
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Abstract

We have measured the complex conductivity σ of a Bi2Sr2CaCu2O8+δ thin film between 0.2 and 0.8 THz. We find σ in the superconducting state to be well described as the sum of contributions from quasiparticles, condensate, and order parameter fluctuations which draw 30% of the spectral weight from the condensate. An analysis based on this decomposition yields a quasiparticle scattering rate on the order of kBT/ħ for temperatures below Tc.

  • Received 14 March 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.2569

©2000 American Physical Society

Authors & Affiliations

J. Corson and J. Orenstein

  • Materials Sciences Division, Lawrence Berkeley National Laboratory and Physics Department, University of California, Berkeley, California 94720

Seongshik Oh, J. O'Donnell, and J. N. Eckstein

  • Department of Physics, University of Illinois, Urbana, Illinois 61801

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Vol. 85, Iss. 12 — 18 September 2000

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