CLEAN AND OXYGEN-COVEREDCu3Au(110): A SURFACE STRUCTURE INVESTIGATION WITH STM AND NICISS

Horst Niehus, Thomas Baumann, Matthias Voetz and Karina Morgenstern
Additional contact information
Horst Niehus: Humboldt-Universität zu Berlin, Institut für Physik, Oberflächenphysik and Atomstoßprozesse, Invalidenstr. 110, D10115 Berlin, Forschungszentrum Jülich, Germany
Thomas Baumann: Humboldt-Universität zu Berlin, Institut für Physik, Oberflächenphysik and Atomstoßprozesse, Invalidenstr. 110, D10115 Berlin, Forschungszentrum Jülich, Germany
Matthias Voetz: Institut für Grenzflächenforschung und Vakuumphysik, KFA Jülich, D52425 Jülich, Germany
Karina Morgenstern: Institut für Grenzflächenforschung und Vakuumphysik, KFA Jülich, D52425 Jülich, Germany

Surface Review and Letters (SRL), 1996, vol. 03, issue 05n06, 1899-1908

Abstract: Cu3Au(110)has been investigated by scanning tunneling microscopy (STM) and 180° low energy ion scattering and detection of neutrals (NICISS). Two different terminations would be possible on the basis of a bulk-truncated surface, a gold-rich or a pure copper surface layer. From the NICISS investigation the gold-rich termination has been found. Two surface modifications could be prepared. Rapid cool-down after annealing at 800 K results in a2×1LEED superstructure, but careful preparation and prolonged cooling below 600 K gives a LEED4×1superstructure. A new pairing row model has been proposed. Upon oxygen exposure at 330 K on the quenched2×1surface and subsequent annealing at 800 K, a2×1LEED superstructure presents itself with considerably sharper half order reflexes. NICISS data propose a segregation of Cu atoms to the surface layer forming -Cu-O- rows just above the Cu rows in theAu-rich layer. The2×1superstructure formed is in part similar to the well-known added row structure atCu(110)-(2×1)-O. The structure model has been verified by direct imaging of the added rows with STM.

Date: 1996
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X96002813
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:03:y:1996:i:05n06:n:s0218625x96002813

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X96002813

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().