Quasiparticles in the superconducting state of Bi2Sr2CaCu2O8

A. Kaminski; J. Mesot; H. Fretwell; J. C. Campuzano; M. R. Norman; M. Randeria; H. Ding; T. Sato; T. Takahashi; T. Mochiku; K. Kadowaki; H. Hoechst

doi:10.1103/PhysRevLett.84.1788

Quasiparticles in the superconducting state of Bi2Sr2CaCu2O8

Superconductivity 2009-10-31 v2

Authors: A. Kaminski , J. Mesot , H. Fretwell , J. C. Campuzano , M. R. Norman , M. Randeria , H. Ding , T. Sato , T. Takahashi , T. Mochiku , K. Kadowaki , H. Hoechst

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Abstract

Recent improvements in momentum resolution by a factor of 32 lead to qualitatively new ARPES results on the spectra of Bi2Sr2CaCu2O8 (Bi2212) along the (pi,pi) direction, where there is a node in the superconducting gap. With improved resolution, we now see the intrinsic lineshape, which indicates the presence of true quasiparticles at the Fermi momentum in the superconducting state, and lack thereof in the normal state. The region of momentum space probed here is relevant for charge transport, motivating a comparison of our results to conductivity measurements by infrared reflectivity.

Keywords

quasiparticles superconducting state Bi2Sr2CaCu2O8 ARPES momentum resolution nodal direction charge transport

Cite

@article{arxiv.cond-mat/9904390,
  title  = {Quasiparticles in the superconducting state of Bi2Sr2CaCu2O8},
  author = {A. Kaminski and J. Mesot and H. Fretwell and J. C. Campuzano and M. R. Norman and M. Randeria and H. Ding and T. Sato and T. Takahashi and T. Mochiku and K. Kadowaki and H. Hoechst},
  journal= {arXiv preprint arXiv:cond-mat/9904390},
  year   = {2009}
}

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revised paper with new figures

Quasiparticles in the superconducting state of Bi2Sr2CaCu2O8

Abstract

Keywords

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