𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Tunnel junctions on 1:2:4 YBaCuO single crystal

✍ Scribed by P. Romano; R. Di Leo; A.M. Cucolo; A. Nigro; B. Dabrowski; P.G. Radaelli

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
168 KB
Volume
235-240
Category
Article
ISSN
0921-4534

No coin nor oath required. For personal study only.

✦ Synopsis

We have studied the 1:2:4 phase of the Y-Ba-Cu-O compound by means of tunneling spectroscopy on single crystal based junctions. The crystals, with Tc-80 K, have been chemically etched before the deposition of the counterelectrode in form of a thin film through a metallic mask. We have compared the tunneling spectra to those obtained on the Y123 system. The features at +20 mV of the 1:2:3 phase are still observed in the 1:2:4 phase, while the low bias features at +5 mV are not present in the tunneling characteristics of the Y124 compound. The experimental results are discussed in terms of the different CuO chain role in the Y 123 and Y 124 systems.

📜 SIMILAR VOLUMES

Reproducible tunneling characteristics a
Reproducible tunneling characteristics and zero-bias anomalies in YBaCuO tunnel junctions
✍ A.M. Cucolo; R. Di Leo; F. Licci 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 449 KB

We have investigated interfaces between chemically etched YBa2CugOT\_, single cry. stals and evaporated thin films of different materials by means of planar tt and junctions with natural barriers. We have found that reproducible tunneling characteristics are obtained with Au, Bi and Sb counterclectr