Ge1-x Mnx Clusters: Central structural and magnetic building blocks of nanoscale wire-like self-assembly in a magnetic semiconductor

Ge1-x Mnx Clusters: Central structural and magnetic building blocks of nanoscale wire-like self-assembly in a magnetic semiconductor

Controlled nanoscale self-assembly of magnetic entities in semiconductors opens novel perspectives for the tailoring of magnetic semiconductor films and nanostructures with room temperature functionality. We report that a strongly directional self-assembly in growth direction in Mn-alloyed Ge is due...

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Bibliographic Details
Main Authors: Bougeard, D., Sircar, N., Ahlers, S., Lang, V., Abstreiten, G., Trampert, A., Lebeau, J., Stemmer, S., Saxey, David, Cerezo, A.
Format: Journal Article
Published: American Chemical Society 2009
Online Access:http://hdl.handle.net/20.500.11937/36557
Description
Summary:Controlled nanoscale self-assembly of magnetic entities in semiconductors opens novel perspectives for the tailoring of magnetic semiconductor films and nanostructures with room temperature functionality. We report that a strongly directional self-assembly in growth direction in Mn-alloyed Ge is due to a stacking of individual Ge1-x Mnx clusters. The clusters represent the relevant entitles for the magnetization of the material. They are formed of a core-shell structure displaying a Mn concentration gradient. While the magnetic moments seem to be carried by the shells of the clusters, their core is magnetically inactive. © 2009 American Chemical Society.

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