Circularly polarized emission from ensembles of InGaAs/GaAs quantum rings
| Autor: | Jorge M. Garcia, Christophe Testelin, Juan P. Martínez-Pastor, R. Naouari, M.A. Maaref, Daniel Granados, W. Ouerghi, F. Bernardot |
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| Přispěvatelé: | Institut des Nanosciences de Paris (INSP), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Nanostructures et systèmes quantiques (INSP-E1), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Unité de Recherche en Physique des Semiconducteurs et Capteurs, IPEST, Universitat de València (UV), Instituto de Microelectrónica de Madrid, Centro Nacional de Microelectronica [Spain] (CNM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC) |
| Rok vydání: | 2017 |
| Předmět: |
Diamagnetic shift
Materials science Exciton 02 engineering and technology 7. Clean energy 01 natural sciences Condensed Matter::Materials Science Quantum rings 0103 physical sciences 010306 general physics Spectroscopy Quantum ComputingMilieux_MISCELLANEOUS Biexciton [PHYS]Physics [physics] Range (particle radiation) Condensed Matter::Other Exchange interaction 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Exchange splitting Electronic Optical and Magnetic Materials Magnetic field Quantum dot Circular polarization Atomic physics 0210 nano-technology |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Silicon Silicon, Springer, 2017, 9 (5), pp.689-693. ⟨10.1007/s12633-015-9388-2⟩ Silicon, 2017, 9 (5), pp.689-693. ⟨10.1007/s12633-015-9388-2⟩ |
| ISSN: | 1876-990X |
| DOI: | 10.1007/s12633-015-9388-2⟩ |
| Popis: | Magneto-photoluminescence spectroscopy measurements were performed on self-assembled InGaAs/GaAs quantum rings. We report exciton exchange energy as a function of interband emission energy; we measure a decrease from 163 μ e V to 43 μ e V in the range of 1.30 eV to 1.40 eV. This result is remarkable and compatible with the exciton exchange energy in self-assembled InAs/GaAs quantum dots. Our results reveal the high value of exciton exchange albeit the quantum rings shape. We show that the exciton energy is sensitive to a magnetic field. |
| Databáze: | OpenAIRE |
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