Nodal Quasiparticle Lifetime in the Superconducting State of Bi2Sr2CaCu2O8+δ

J. Corson; J. Orenstein; Seongshik Oh; J. O'Donnell; J. N. Eckstein

doi:10.1103/PhysRevLett.85.2569

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Nodal Quasiparticle Lifetime in the Superconducting State of Bi2Sr2CaCu2O8+δ

J. Corson, J. Orenstein, Seongshik Oh, J. O'Donnell, J. N. Eckstein

DOI 10.1103/PhysRevLett.85.2569 · Physical Review Letters

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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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	85	Pressure not reported	unknown
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown