Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
62 (1993), S. 3040-3042
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
In an ultrahigh vacuum apparatus, c-axis oriented YBa2Cu3O7−x (YBCO) thin films were deposited by an ozone-assisted reactive coevaporation method and characterized by low-energy electron diffraction (LEED) and low-energy ion scattering spectroscopy (LEISS). A clean surface with crystal perfection within the top two monolayers was confirmed by LEED for the first time. LEISS analysis showed that this clean surface is terminated by Cu(1)-O chains. These experiments also indicate that the oxygen pressure and the vacuum condition are one of the essential factors in keeping an outermost surface clean.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.109132
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