Artículo
Terrace effects in grazing-incidence fast atom diffraction from a LiF(001) surface
Fecha de publicación:
12/2022
Editorial:
American Physical Society
Revista:
Physical Review A: Atomic, Molecular and Optical Physics
ISSN:
1050-2947
e-ISSN:
2469-9934
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The effect produced by surface defects on grazing-incidence fast atom diffraction (GIFAD) patterns is studied by considering the presence of terraces in a LiF(001) sample. For helium atoms impinging along the (110) direction of the LiF surface, we analyze the influence of a monolayer terrace with its edge oriented parallel or perpendicular to the axial channel. We found that the presence of an outward transverse step introduces a diffuse background above the Laue circle, which displays additional peaked structures. For inward transverse steps, instead, such a background is placed below the Laue circle, showing a much weaker intensity. On the other hand, parallel steps give rise to asymmetric angular distributions, which are completely confined to the Laue circle. Therefore, these theoretical results suggest that GIFAD might be used to characterize terrace defects.
Palabras clave:
FAST ATOM DIFRACTION
,
LiF(001)
,
SURFACE
,
DEFECTS
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Citación
Frisco, Leandro; Gravielle, Maria Silvia; Terrace effects in grazing-incidence fast atom diffraction from a LiF(001) surface; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 106; 6; 12-2022; 62813-62820
Compartir
Altmétricas