Charge carrier localization due to ferromagnetic clusters in concentrated AuFe alloys
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
The electrodynamic properties of Au1-x Fex films are measured for various Fe contents x=0, 6, 17, and 22□at.%. From room-temperature optical measurements over a broad spectral range (10-3.3× 104 □ cm-1), we obtain the frequency-dependent conductivity of the films. As the iron concentration increases, a stronger decrease in the magnetic contribution to the dc conductivity compared to ac conductivity (at frequency 10□ cm-1) is detected. In addition, a broad absorption peak is discovered at frequency 1000-3000□ cm-1 for concentrations of 6-22□at.%. Both observations are associated with ferromagnetic clusters that cause partial localization of conduction electrons.
Details
Originalsprache | Englisch |
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Aufsatznummer | 054203 |
Fachzeitschrift | Physical Review B - Condensed Matter and Materials Physics |
Jahrgang | 79 |
Ausgabenummer | 5 |
Publikationsstatus | Veröffentlicht - 18 Feb. 2009 |
Peer-Review-Status | Ja |
Extern publiziert | Ja |
Externe IDs
ORCID | /0000-0001-9862-2788/work/142255401 |
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