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Strong room-tempera...
Strong room-temperature optical and spin polarization in InAs/GaAs quantum dot structures
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- Beyer, Jan, 1980- (author)
- Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan
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- Buyanova, Irina A (author)
- Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan
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- Suraprapapich, S. (author)
- Department of Electrical and Computer Engineering, University of California, USA
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- Tu, C. W. (author)
- Department of Electrical and Computer Engineering, University of California, USA
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- Chen, Weimin (author)
- Linköpings universitet,Funktionella elektroniska material,Tekniska högskolan
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(creator_code:org_t)
- American Institute of Physics, 2011
- 2011
- English.
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In: Applied Physics Letters. - : American Institute of Physics. - 0003-6951 .- 1077-3118. ; 98:20, s. 203110-
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Abstract
Subject headings
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- Room-temperature optical and spin polarization up to 35% is reported in InAs/GaAs quantum dots in zero magnetic field under optical spin injection using continuous-wave optical orientation spectroscopy. The observed strong spin polarization is suggested to be facilitated by a shortened trion lifetime, which constrains electron spin relaxation. Our finding provides experimental demonstration of the highly anticipated capability of semiconductor quantum dots as highly polarized spin/light sources and efficient spin detectors, with efficiency greater than 35% in the studied quantum dots.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Keyword
- Semiconductor physics
- Halvledarfysik
- Photonics
- Fotonik
Publication and Content Type
- ref (subject category)
- art (subject category)
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