FexAg100−x granular thin films, being 20<x<70, were prepared by pulsed laser deposition. The thermal evolution of the electric resistance shows a dramatic drop in the range of 200<T<300 K, completely reversible with temperature and associated to a current switching between the granular thin film and its Si substrate. High resolution transmission electron microscopy measurements have revealed an amorphous interface between the thin film and the substrate, and x-ray absorption spectroscopy studies have demonstrated an electronic localization associated to the Fe atoms in this interface, which is intrinsically responsible for the current switching.
J. ALONSO, M. L. FDEZ-GUBIEDA, G. SARMIENTO, J. M. BARANDIARÁN, A. SVALOV, I. ORUE, et al. (2009). Influence of the interface on the electronic channel switching of a Fe–Ag thin film on a Si substrate. APPLIED PHYSICS LETTERS, 95, 082103.
Titolo: | Influence of the interface on the electronic channel switching of a Fe–Ag thin film on a Si substrate |
Autori: | |
Data di pubblicazione: | 2009 |
Rivista: | |
Citazione: | J. ALONSO, M. L. FDEZ-GUBIEDA, G. SARMIENTO, J. M. BARANDIARÁN, A. SVALOV, I. ORUE, et al. (2009). Influence of the interface on the electronic channel switching of a Fe–Ag thin film on a Si substrate. APPLIED PHYSICS LETTERS, 95, 082103. |
Abstract: | FexAg100−x granular thin films, being 20<x<70, were prepared by pulsed laser deposition. The thermal evolution of the electric resistance shows a dramatic drop in the range of 200<T<300 K, completely reversible with temperature and associated to a current switching between the granular thin film and its Si substrate. High resolution transmission electron microscopy measurements have revealed an amorphous interface between the thin film and the substrate, and x-ray absorption spectroscopy studies have demonstrated an electronic localization associated to the Fe atoms in this interface, which is intrinsically responsible for the current switching. |
Handle: | http://hdl.handle.net/11590/146486 |
Appare nelle tipologie: | 1.1 Articolo in rivista |