Low-leakage superconductive tunneling in all-YBa2Cu3O7−x edge junctions

5 October 1992

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 61 (14) , 1709-1711
https://doi.org/10.1063/1.108431

Abstract

All‐YBa₂Cu₃O_7−x (YBCO) superconductor‐insulator‐superconductor (SIS) edge‐type tunnel junctions have been fabricated. This leads to the observation of superconductive tunneling with very low small‐bias conductance for the first time in fabricated all‐YBCO junctions. The presence of a superconductive gap of YBCO with a complete suppression of the density of states at the Fermi surface is evident from dynamic conductance measurements. The approach to all‐YBCO SIS edge junctions is discussed.

Keywords

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