Multilayer YBa2Cu3Ox-SrTiO3-YBa2Cu3Ox films for insulating crossovers
- 8 January 1990
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 56 (2) , 189-191
- https://doi.org/10.1063/1.103281
Abstract
We describe our procedure for fabricating YBa2Cu3Ox‐SrTiO3‐YBa2Cu3Ox thin‐film trilayer structures. Each film is grown in situ by excimer laser deposition onto a heated (100)MgO substrate. The geometrical configuration of each layer is defined by a metal mask; the vacuum chamber is opened between depositions to allow the targets and masks to be changed. The lower and upper YBa2Cu3Ox films in the best trilayer structure had transition widths of 1 and 3 K (10–90%), respectively, and transition temperatures (zero resistance) of 87 K. The resistance between the YBa2Cu3Ox films at 77 K was 108 Ω for an overlapping area of 0.2 mm2, corresponding to a SrTiO3 resistivity of 4×109 Ω cm.Keywords
This publication has 6 references indexed in Scilit:
- I n s i t u processing of epitaxial Y-Ba-Cu-O high T c superconducting films on (100) SrTiO3 and (100) YS-ZrO2 substrates at 500–650 °CApplied Physics Letters, 1989
- Highly oriented as-deposited superconducting laser ablated thin films of Y1Ba2Cu3O7−δ on SrTiO3, zirconia, and Si substratesApplied Physics Letters, 1988
- Epitaxial growth of YBa2Cu3O7−x thin films by a laser evaporation processApplied Physics Letters, 1988
- Direct preparation of high-Tc-superconducting films by laser ablationSolid State Communications, 1988
- As-deposited high T c and J c superconducting thin films made at low temperaturesApplied Physics Letters, 1988
- Deposition of superconducting Y-Ba-Cu-O films at 400 °C without post-annealingApplied Physics Letters, 1988