English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/136378
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Direct observation of many-body charge density oscillations in a two-dimensional electron gas

AutorSessi, Paolo; Silkin, Viatcheslav M.; Nechaev, I. A.; Bathon, Thomas; El-Kareh, Lydia; Chulkov, Eugene V. ; Echenique, Pedro M. ; Bode, Matthias
Fecha de publicación2015
EditorNature Publishing Group
CitaciónNature Communications 6: 8691 (2015)
ResumenQuantum interference is a striking manifestation of one of the basic concepts of quantum mechanics: the particle-wave duality. A spectacular visualization of this effect is the standing wave pattern produced by elastic scattering of surface electrons around defects, which corresponds to a modulation of the electronic local density of states and can be imaged using a scanning tunnelling microscope. To date, quantum-interference measurements were mainly interpreted in terms of interfering electrons or holes of the underlying band-structure description. Here, by imaging energy-dependent standing-wave patterns at noble metal surfaces, we reveal, in addition to the conventional surface-state band, the existence of an anomalous energy band with a well-defined dispersion. Its origin is explained by the presence of a satellite in the structure of the many-body spectral function, which is related to the acoustic surface plasmon. Visualizing the corresponding charge oscillations provides thus direct access to many-body interactions at the atomic scale.
Identificadoresdoi: 10.1038/ncomms9691
e-issn: 2041-1723
Aparece en las colecciones: (CFM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.