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Mn-doped InAs self-organized diluted magnetic quantum-dot layers with Curie temperatures above
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10.1063/1.1781361
/content/aip/journal/apl/85/6/10.1063/1.1781361
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/6/10.1063/1.1781361
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic heterostructure of a typical InAs:Mn quantum-dot multilayer sample grown by LT-MBE.

Image of FIG. 2.
FIG. 2.

(a) High-magnification TEM bright field image of an InAs:Mn quantum-dot layer taken with ⟨011⟩ projection. A representative electron-diffraction pattern of the GaAs matrix surrounding an InAs:Mn QD layer is shown in the inset. (b) High-resolution TEM image of an InAs:Mn quantum dot (top). In-plane EELS profile ( lateral resolution) showing the distribution of Mn at a single InAs:Mn quantum dot as represented by the Mn -edge peak intensity vs position (bottom).

Image of FIG. 3.
FIG. 3.

(a) Hysteresis loops for a ten-layer InAs:Mn QD sample measured by SQUID magnetometry at , 125, and ; (b) magnetic moment per unit area vs temperature for a ten-layer InAs:Mn QD sample measured by SQUID magnetometry in the presence of a field. The inset shows the hysteresis loops for the same sample with in-plane and out-of-plane magnetization obtained at . A temperature-independent, diamagnetic contribution from the GaAs substrate is subtracted from the measured data.

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/content/aip/journal/apl/85/6/10.1063/1.1781361
2004-08-04
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Mn-doped InAs self-organized diluted magnetic quantum-dot layers with Curie temperatures above 300K
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/6/10.1063/1.1781361
10.1063/1.1781361
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