Preparation of YBa2Cu3O7−δ thin films with thickness gradients and investigations of growth stages by scanning tunneling microscopy
- 15 June 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (24) , 3054-3056
- https://doi.org/10.1063/1.106754
Abstract
The growth of (001) oriented YBa2Cu3O7−δ films on LaAlO3(100) has been studied by scanning tunneling microscopy. Using a special half‐shadow technique different growth stages have been obtained simultaneously on a single substrate crystal: nucleation and spreading of two‐dimensional islands, their coalescence and growth, formation of well‐developed growth hills and finally of a continuous film. The growth steps were determined to be one unit cell spacing in height regarding the crystallographic c‐axis.Keywords
This publication has 15 references indexed in Scilit:
- Dislocation-mediated flux creep inPhysical Review B, 1991
- Growth Mechanism of Sputtered Films of YBa 2 Cu 3 O 7 Studied by Scanning Tunneling MicroscopyScience, 1991
- Screw dislocations in high-Tc filmsNature, 1991
- The nucleation and heteroepitactic growth of YBa2Cu3O7 − δ thin films on MgOJournal of Crystal Growth, 1991
- Deposition of high temperature superconducting films by physical and chemical methodsJournal of Crystal Growth, 1991
- Reflection high-energy electron diffraction oscillations during epitaxial growth of high-temperature superconducting oxidesPhysical Review Letters, 1990
- Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressurePhysical Review Letters, 1987
- Possible highT c superconductivity in the Ba?La?Cu?O systemZeitschrift für Physik B Condensed Matter, 1986
- First-order interaction force between a dislocation loop and flux line lattice in a type-II superconductorApplied Physics Letters, 1976
- The elementary interaction force between a dislocation loop and the flux line lattice of a type II superconductorPhilosophical Magazine, 1976