Sökning: id:"swepub:oai:DiVA.org:liu-60486" >
Efficiency of spin ...
Efficiency of spin injection in novel InAs quantum dotstructures: exciton vs. free carrier injection
-
- Beyer, Jan, 1980- (författare)
- Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan
-
- Buyanova, Irina A (författare)
- Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan
-
- Suraprapapich, Suwaree (författare)
- Dept of Electrical and Computer Engineering, University of California at San Diego, La Jolla, USA
-
visa fler...
-
- Tu, Charles W (författare)
- Dept of Electrical and Computer Engineering, University of California at San Diego, La Jolla, USA
-
- Chen, Weimin (författare)
- Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan
-
visa färre...
-
(creator_code:org_t)
- 2010-09-20
- 2010
- Engelska.
-
Serie: Journal of Physics: Conference Series, 1742-6596 ; 245
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Unambiguous experimental evidence for a significant difference in efficiency of excitonic vs. free carrier spin injection is provided in novel laterally arranged self-assembled InAs/GaAs quantum dot structures, from optical orientation and tunable laser spectroscopy. A lower efficiency of exciton spin injection as compared to free carrier spin injection from wetting layers into QDs results in a distinct feature in luminescence polarization of the QDs as a function of excitation photon energy. It is shown that this difference is not related to carrier density and state-filling effects arising from the difference in optical absorption efficiency between the excitons and free carriers. Rather, it is a genuine property for exciton spin injection that suffers stronger spin relaxation due to Coulomb exchange interaction.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Semiconductor physics
- Halvledarfysik
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)