Anomalous KCl(001) Surface Corrugation from Fast He Diffraction at Very Grazing Incidence.
Phys Rev Lett
; 125(9): 096101, 2020 Aug 28.
Article
em En
| MEDLINE
| ID: mdl-32915632
ABSTRACT
We present theoretical and experimental evidence of an anomalous surface corrugation behavior in He-KCl(001) for incidence along ⟨110⟩. When the He normal energy decreases below 100 meV, i.e., He-surface distances Z>2 Å, the corrugation unexpectedly increases up to an impressive â³85%. This is not due to van der Waals interactions but to the combination of soft potential effects and the evolution of He-cation and He-anion interactions with Z. This feature, not previously analyzed on alkali-halide surfaces, may favor the alignment properties of weakly interacting overlayers.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Incidence_studies
/
Risk_factors_studies
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Argentina