Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 67-73 |
| Seitenumfang | 7 |
| Fachzeitschrift | Europhysics Letters (EPL) |
| Jahrgang | 56 |
| Ausgabenummer | 1 |
| Publikationsstatus | Veröffentlicht - 1 Okt. 2001 |
Abstract
We show in a Low Energy Electron Diffraction (LEED) experiment that small concentrations of oxygen atoms (2 to 12% of a monolayer) added to half a monolayer of Sr on Mo(112), ordered in a c(2 × 2) structure, do not destroy order, but introduce new correlations with different translational symmetry. Thus incommensurate structures with domain walls are formed and the c(2 × 2) is finally transformed into a p(2 × 1) structure. Temperature-driven transitions at constant average densities from incommensurate to short-range order and finally to long-range order at high temperature can be described by simultaneous melting and domain wall evaporation.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Europhysics Letters (EPL), Jahrgang 56, Nr. 1, 01.10.2001, S. 67-73.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Impurity-induced changes of overlayer symmetry and of phase transitions
AU - Godzik, G.
AU - Pfnür, Herbert
AU - Lyuksyutov, I. F.
PY - 2001/10/1
Y1 - 2001/10/1
N2 - We show in a Low Energy Electron Diffraction (LEED) experiment that small concentrations of oxygen atoms (2 to 12% of a monolayer) added to half a monolayer of Sr on Mo(112), ordered in a c(2 × 2) structure, do not destroy order, but introduce new correlations with different translational symmetry. Thus incommensurate structures with domain walls are formed and the c(2 × 2) is finally transformed into a p(2 × 1) structure. Temperature-driven transitions at constant average densities from incommensurate to short-range order and finally to long-range order at high temperature can be described by simultaneous melting and domain wall evaporation.
AB - We show in a Low Energy Electron Diffraction (LEED) experiment that small concentrations of oxygen atoms (2 to 12% of a monolayer) added to half a monolayer of Sr on Mo(112), ordered in a c(2 × 2) structure, do not destroy order, but introduce new correlations with different translational symmetry. Thus incommensurate structures with domain walls are formed and the c(2 × 2) is finally transformed into a p(2 × 1) structure. Temperature-driven transitions at constant average densities from incommensurate to short-range order and finally to long-range order at high temperature can be described by simultaneous melting and domain wall evaporation.
UR - http://www.scopus.com/inward/record.url?scp=0035471048&partnerID=8YFLogxK
U2 - 10.1209/epl/i2001-00488-0
DO - 10.1209/epl/i2001-00488-0
M3 - Article
AN - SCOPUS:0035471048
VL - 56
SP - 67
EP - 73
JO - Europhysics Letters (EPL)
JF - Europhysics Letters (EPL)
SN - 0295-5075
IS - 1
ER -