English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/160863
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Magnetic impurities on heavy metal surface alloys

AutorSchirone, S.; Valbuena, M. A.; Robles, Roberto ; Lorente, Nicolás ; Nistor, Corneliu ; Gambardella, Pietro; Mugarza, Aitor
Fecha de publicación2016
EditorCSIC-ICN Centro de Investigación en Nanociencia y Nanotecnología (CIN2)
CitaciónFuerzas y Túnel (2016)
ResumenSpin-orbit interaction (SOI) at the interface of ferromagnets and heavy metals can lead to interesting phenomena, such as the current-induced reversal of magnetization, and the inverse Rashba Edelstein effect. However, the magnetic properties of these interfaces and the effect of SOI on fundamental magnetic interactions such as the Kondo effect is basically unexplored at the experimental level. Here we present a Scanning Tunnelling Microscopy and Spectroscopy (STM/STS) study of magnetic impurities, nominally Fe adatoms or small clusters, on top of heavy metal surface alloys: BiAg2, characterised by the strongest Rashba interaction up to date, and SbAg2 (Fig. 1), where the SOI is negligible. We have complemented our STS data with XMCD measurements and DFT calculations to study the magnetic moment and anisotropy, and ARPES measurements to probe the interfacial band structure. STS spectra show a zero-bias peak, signature of the Kondo effect, localized on the adatoms. Both the shape and width of the Kondo resonance dramatically depend on the adsorption site of the Fe adatom. In the case of SbAg2, this was demonstrated by moving Fe adatoms from one site to the other by tipinduced manipulation (fig. 1). The presence of a Kondo resonance is in agreement with the sizeable magnetic moment derived from both XMCD and DFT. ARPES data on the other hand reveal that the SOI induced spinsplit bands in BiAg2 are unaffected by the presence of Fe. However, in contrast to theoretical predictions, the similar Kondo resonance found on both BiAg2 and SbAg2 suggest no evident effect of SOI on the magnetic interactions.
DescripciónResumen del póster presentado a la 10th Conferencia Fuerzas y Túnel, celebrada en Girona (España) del 5 al 7 de septiembre de 2016.-- et al.
URIhttp://hdl.handle.net/10261/160863
Aparece en las colecciones: (CIN2) Comunicaciones congresos
(CFM) Comunicaciones congresos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


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