This article is cited in 2 papers

Anomaly in the tunneling $\mathbf{I(V)}$ characteristics of Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$

A. Mourachkine

Free University of Brussels

Abstract: Tunneling measurements have been carried out on slightly overdoped Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$ single crystals below and above the critical temperature by break-junctions and in-plane point-contacts. An anomaly was found in the tunneling $I(V)$ characteristics. Analysis of the data shows that the anomaly is caused by the superconducting condensate. In the extracted $I(V)$ characteristics of the condensate, the constant asymptotics points to the presence of one-dimensionality in Bi2212. The anomaly found here puts additional constraints on the final theory of high-$T_c$ superconductivity.

PACS: 74.25.-q, 74.50.+r, 74.72.Hs

Received: 12.05.2003

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2003, 77:12, 666–670

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