Intrinsic tunneling spectroscopy in small Bi2212 mesas

V. M. Krasnov; A. Yurgens; D. Winkler; P. Delsing

Intrinsic tunneling spectroscopy in small Bi2212 mesas

Superconductivity 2007-05-23 v1

Authors: V. M. Krasnov , A. Yurgens , D. Winkler , P. Delsing

Abstract

We present intrinsic tunneling spectroscopy measurements on small Bi $_2$ Sr $_2$ CaCu $_2$ O $_{8+x}$ mesas. The tunnel conductance curves show both sharp peaks at the superconducting gap voltage and broad humps representing the $c$ -axis pseudo-gap. The superconducting gap vanishes at $T_c$ , while the pseudo-gap exists well above $T_c$ . Our observation implies that the superconducting and pseudo-gaps represent different coexisting phenomena.

Keywords

tunneling spectroscopy Bi2212 mesa superconducting gap pseudo-gap tunnel conductance c-axis

Cite

@article{arxiv.cond-mat/0002094,
  title  = {Intrinsic tunneling spectroscopy in small Bi2212 mesas},
  author = {V. M. Krasnov and A. Yurgens and D. Winkler and P. Delsing},
  journal= {arXiv preprint arXiv:cond-mat/0002094},
  year   = {2007}
}

Comments

2 pages, 2 figures. Proc. "Electron Transport in Mesoscopic Systems" (Satellite conf. to LT22) 12-15 August 1999, Goteborg, Sweden, P85, pp.231-232

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