Phys. Rev. Lett. 87, 227001 (2001) [4 pages]Coherent Quasiparticle Weight and Its Connection to High- Tc Superconductivity from Angle-Resolved PhotoemissionReceived 13 October 2000; published 7 November 2001 We study the doping and temperature dependence of the single-particle coherent weight, zA, for high- Tc superconductors Bi2Sr2CaCu2O8+x using angle-resolved photoemission. We find that at low temperatures the coherent weight zA at (π,0) is proportional to the carrier concentration x and that the temperature dependence of zA is similar to that of the c-axis superfluid density. We show that, for a wide range of carrier concentration, the superconducting transition temperature scales with the product of the low-temperature coherent weight and the maximum superconducting gap. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.227001
DOI:
10.1103/PhysRevLett.87.227001
PACS:
71.18.+y, 74.25.Jb, 74.72.Hs, 79.60.Bm
See AlsoComment: A. Kallio, J. Hissa, and V. Bräysy, Comment on “Coherent Quasiparticle Weight and Its Connection to High-Tc Superconductivity from Angle-Resolved Photoemission”, Phys. Rev. Lett. 89, 279701 (2002). |
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