Electron hole liquid in silicon single quantum wells
| Autor: | V. Calvo, F. Fournel, Noël Magnea, Joël Eymery, N. Pauc |
|---|---|
| Přispěvatelé: | Service de Physique des Matériaux et Microstructures (SP2M - UMR 9002), Institut Nanosciences et Cryogénie (INAC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Rok vydání: | 2005 |
| Předmět: |
Silicon
Photoluminescence Exciton Physics::Optics chemistry.chemical_element Dielectric Electron hole 01 natural sciences Inorganic Chemistry Condensed Matter::Materials Science 0103 physical sciences Quantum well Electrical and Electronic Engineering Physical and Theoretical Chemistry 010306 general physics Electron hole liquid Spectroscopy 010302 applied physics Condensed matter physics Condensed Matter::Other Chemistry Organic Chemistry Condensation Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Quantum dot [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] |
| Zdroj: | Optical Materials Optical Materials, 2005, 27 (5), pp.995-999. ⟨10.1016/j.optmat.2004.08.051⟩ Optical Materials, Elsevier, 2005, 27 (5), pp.995-999. ⟨10.1016/j.optmat.2004.08.051⟩ |
| ISSN: | 0925-3467 1873-1252 |
| DOI: | 10.1016/j.optmat.2004.08.051 |
| Popis: | International audience; We have carried out photoluminescence measurements on the two dimensional electron hole liquid in perfectly crystalline Si quantum wells with SiO2 barriers. The condensation of excitons in an EHL is strongly enhanced in 2D geometry. Formation of liquid nanodroplets with size varying with laser power is seen. Carriers are submitted to a quantum confinement regime for sufficiently small thickness. We present a model taking into account 2D many-body effects and the increase of the Coulomb interaction due to the dielectric mismatch between the Si well and the dielectric barrier. Results are in good agreement with photoluminescence measurements. |
| Databáze: | OpenAIRE |
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