SUBSTRATE-MEDIATED CONTROL OF THE MICROSTRUCTURE OF YBA2CU3O7-DELTA THIN-FILMS

Authors
HAAGE T ZEGENHAGEN J CARDONA M HABERMEIER HU
Citation
T. Haage et al., SUBSTRATE-MEDIATED CONTROL OF THE MICROSTRUCTURE OF YBA2CU3O7-DELTA THIN-FILMS, Journal of alloys and compounds, 251(1-2), 1997, pp. 23-26
Citations number
8
Categorie Soggetti
Chemistry Physical","Metallurgy & Metallurigical Engineering","Material Science
Journal title
Journal of alloys and compounds → ACNP
ISSN journal
09258388
Volume
251
Issue
1-2
Year of publication
1997
Pages
23 - 26
Database
ISI
SICI code
0925-8388(1997)251:1-2<23:SCOTMO>2.0.ZU;2-7
Abstract
We have studied the surface of vicinal SrTiO3(001) substrates and ther eon deposited YBa2Cu3O7-delta (YBCO) thin films by UHV-scanning tunnel ing microscopy (STM). We discuss the influence of the uniformity of su bstrate terraces on film growth. STM images indicate, that a combinati on of island and step-flow growth occurs on 1.2 degrees miscut SrTiO3. In particular, a regular nanoscale step structure of a 10 degrees mis cut SrTiO3 surface generates an almost periodic surface structure of t he YBCO films. Our findings indicate that a substrate-mediated control of the surface structure of YBCO films can be achieved.