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Title: Magnetic field control of the neutral and charged exciton fine structure in single quantum dashes emitting at 1.55 μm

We investigated the neutral and charged exciton fine structure in single InAs/InGaAlAs/InP quantum dashes emitting at 1.55 μm using polarization-resolved microphotoluminescence in a magnetic field. Inverted spin configuration of horizontally [1–10] and vertically [110] polarized transitions has been observed. An in-plane magnetic field of up to 5 Tesla has been applied to tailor the fine structure, and eventually to reduce the splitting of the bright exciton states down to zero. This inverted structure has been observed for all the investigated excitons, making it a characteristic feature for this class of nanostructures with the largest splitting reduction of 170 μeV.
Authors:
; ; ; ; ;  [1] ;  [2] ;  [2] ;  [3] ;  [2] ;  [4]
  1. Laboratory for Optical Spectroscopy of Nanostructures, Department of Experimental Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, Wrocław (Poland)
  2. Technische Physik, University of Würzburg and Wilhelm-Conrad-Röntgen-Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg (Germany)
  3. (INA), CINSaT, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel (Germany)
  4. (United Kingdom)
Publication Date:
OSTI Identifier:
22420270
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM ARSENIDES; FINE STRUCTURE; GALLIUM COMPOUNDS; INDIUM ARSENIDES; INDIUM PHOSPHIDES; MAGNETIC FIELDS; NANOSTRUCTURES; PHOTOLUMINESCENCE