Superconducting Gap and Pseudogap in Bi-2212

Matthias Opel; Francesca Venturini; Rudi Hackl; Helmuth Berger; Laszlo Forro

doi:10.1016/S0921-4526(99)02344-3

Superconducting Gap and Pseudogap in Bi-2212

Superconductivity 2014-09-23 v1

Authors: Matthias Opel , Francesca Venturini , Rudi Hackl , Helmuth Berger , Laszlo Forro

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Abstract

We present results of Raman scattering experiments in differently doped Bi-2212 single crystals. Below Tc the spectra show pair-breaking features in the whole doping range. The low frequency power laws confirm the existence of a $d_{x^2-y^2}$ -wave order parameter. In the normal state between Tc and T* = 200K we find evidence for a pseudogap in B2g symmetry. Upon doping its effect on the spectra decreases while its energy scale appears to be unchanged.

Keywords

cuprate superconductors high-temperature superconductivity doping in semiconductors

Cite

@article{arxiv.cond-mat/9906448,
  title  = {Superconducting Gap and Pseudogap in Bi-2212},
  author = {Matthias Opel and Francesca Venturini and Rudi Hackl and Helmuth Berger and Laszlo Forro},
  journal= {arXiv preprint arXiv:cond-mat/9906448},
  year   = {2014}
}

Comments

2 pages, 1 EPS figure; LT22 Proceedings to appear in Physica B

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