Highly Non-linear Excitonic Zeeman Spin-Splitting in Composition-Engineered Artificial Atoms
| Autor: | V. Jovanov, Gerhard Abstreiter, Max Bichler, Martin S. Brandt, JG Joris Keizer, T. Eissfeller, F. Klotz, Jonathan J. Finley, E. C. Clark, PM Paul Koenraad, Stephan Kapfinger |
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| Přispěvatelé: | Photonics and Semiconductor Nanophysics, Semiconductor Nanostructures and Impurities |
| Rok vydání: | 2011 |
| Předmět: |
Exciton
FOS: Physical sciences 02 engineering and technology 01 natural sciences law.invention symbols.namesake law 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 010306 general physics Mixing (physics) Spin-½ Physics Zeeman effect Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics 021001 nanoscience & nanotechnology Condensed Matter Physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Electronic Optical and Magnetic Materials Nonlinear system Quantum dot symbols Zeeman energy Scanning tunneling microscope 0210 nano-technology |
| Zdroj: | Physical Review B, 85(16):165433, 165433-1/6. American Physical Society |
| ISSN: | 1098-0121 |
| DOI: | 10.48550/arxiv.1112.2585 |
| Popis: | Non-linear Zeeman splitting of neutral excitons is observed in composition engineered In(x)Ga(1-x)As self-assembled quantum dots and its microscopic origin is explained. Eight-band k.p simulations, performed using realistic dot parameters extracted from cross-sectional scanning tunneling microscopy, reveal that a quadratic contribution to the Zeeman energy originates from a spin dependent mixing of heavy and light hole orbital states in the dot. The dilute In-composition (x |
| Databáze: | OpenAIRE |
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