Direct Observation of sp−d Exchange Interactions in Colloidal Mn2+- and Co2+-Doped CdSe Quantum Dots

The defining attribute of a diluted magnetic semiconductor (DMS) is the existence of dopant−carrier magnetic exchange interactions. In this letter, we report the first direct observation of such exchange interactions in colloidal doped CdSe nanocrystals. Doped CdSe quantum dots were synthesized by t...

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Veröffentlicht in:	Nano Letters, 7(4):1037-1043 7(4):1037-1043, 2007-04, Vol.7 (4), p.1037-1043
Hauptverfasser:	Archer, Paul I, Santangelo, Steven A, Gamelin, Daniel R
Format:	Artikel
Sprache:	eng
Schlagworte:	Cadmium Compounds - chemistry Cobalt - chemistry Colloids - chemistry Computer Simulation Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Electric Conductivity Electron states Environmental Molecular Sciences Laboratory Exact sciences and technology EXCHANGE INTERACTIONS Level splitting and interactions MAGNETIC CIRCULAR DICHROISM MAGNETIC SEMICONDUCTORS Magnetics Manganese - chemistry Materials science Materials Testing Models, Chemical Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization NANOSCIENCE AND NANOTECHNOLOGY Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PYROLYSIS QUANTUM DOTS Selenium Compounds - chemistry SPECTROSCOPY Spin-orbit coupling, zeeman, stark, and strain splitting, jahn-teller effect
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