Published December 2, 1991 | Version v1
Journal article Metadata-only

YBa2Cu3O7-x-Y2O3 system and in situ deposition of trilayer heterostructures by coevaporation

Creators

  • 1. Computer Physics Laboratory, Microelectronics and Computer Technology Corporation (MCC), Austin, Texas (USA)
  • 2. Bellcore, Red Bank, New Jersey (USA)

Description

We have deposited YBa2Cu3O7-x-Y2O3-YBa2Cu3O7-x heterostuctures by an in situ electron-beam coevaporation technique. Physical and chemical properties of Y2O3 were studied. The deposition conditions for Y2O3 and YBa2Cu3O7-x are completely compatible. The crystal structure of Y2O3 provides a close lattice match with YBa2Cu3O7-x and allows oxygen diffusion through Y2O3, so that heteroepitaxy and the tetragonal-orthorhombic structural transformations of YBa2Cu3O7-x can be achieved. The heterostructures are therefore of high quality. Both the top and the bottom YBa2Cu3O7-x layers are superconducting above 85 K. Tunneling phenomena on junctions fabricated from these trilayers were observed

Additional details

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
59
Journal Issue
23
Series
Appl. Phys. Lett.
Journal Page Range
3036-3038
ISSN
0003-6951
CODEN
APPLA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
23021445
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
BARIUM OXIDES; COPPER OXIDES; CRYSTAL STRUCTURE; DIFFUSION; HIGH-TC SUPERCONDUCTORS; JOSEPHSON JUNCTIONS; LATTICE PARAMETERS; OXYGEN; PHASE TRANSFORMATIONS; QUATERNARY COMPOUNDS; SUPERCONDUCTING FILMS; SURFACE COATING; YTTRIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; AMINES; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; DEPOSITION; ELEMENTS; FILMS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SEMICONDUCTOR JUNCTIONS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS