期刊
NANO LETTERS
卷 9, 期 11, 页码 3743-3748出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl901928f
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资金
- German Science Foundation (DFG) [SPP 1285]
- NSF MRSEC [DMR05-20415]
- U.K. Engineering and Physical Sciences Research Council (EPSRC) [EP/077664/1]
- Alexander von Humboldt-Stiftung
- Department of Chemistry, Technische Universitat Munchen
- H. Cerva
- Siemens AG
- Munich
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-xMnx clusters. The clusters represent the relevant entities 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.
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