Intrinsic tunneling spectroscopy in small Bi2212 mesas

Details Intrinsic tunneling spectroscopy in small Bi2212 mesas Intrinsic tunneling spectroscopy in small Bi2212 mesas

2000-02-07

arxiv.org/abs/cond-mat/0002094v1

Physics

Condensed Matter

Superconductivity

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

Scientific paper

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.

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