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arxiv: cond-mat/9910367 · v2 · submitted 1999-10-22 · ❄️ cond-mat.supr-con

Low-Energy Quasiparticles in Cuprate Superconductors: A Quantitative Analysis

May Chiao , R.W. Hill , Christian Lupien , Louis Taillefer , P. Lambert , R. Gagnon , P. Fournier This is my paper
classification ❄️ cond-mat.supr-con
keywords analysisbi-2212cupratequantitativequasiparticlessuperconductorsadjustableagreement
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A residual linear term is observed in the thermal conductivity of optimally-doped Bi-2212 at very low temperatures whose magnitude is in excellent agreement with the value expected from Fermi-liquid theory and the d-wave energy spectrum measured by photoemission spectroscopy, with no adjustable parameters. This solid basis allows us to make a quantitative analysis of thermodynamic properties at low temperature and establish that thermally-excited quasiparticles are a significant, perhaps even the dominant mechanism in suppressing the superfluid density in cuprate superconductors Bi-2212 and YBCO.

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