Sökning: onr:"swepub:oai:DiVA.org:liu-140635" >
Temperature-depende...
Temperature-dependent spin injection dynamics in InGaAs/GaAs quantum well-dot tunnel-coupled nanostructures
-
- Chen, Shula, 1986- (författare)
- Graduate School of Information Science and Technology, Hokkaido University, Kita-ku, Sapporo, Japan
-
- Kiba, T. (författare)
- Kitami Institute of Technology, Kitami, Hokkaido, Japan
-
- Yang, Xiaojie (författare)
- Suzhou QiangMing Optoelectronics Co. Ltd., Suzhou, China
-
visa fler...
-
- Takayama, J. (författare)
- Graduate School of Information Science and Technology, Hokkaido University, Kita-ku, Sapporo, Japan
-
- Murayama, A. (författare)
- Graduate School of Information Science and Technology, Hokkaido University, Kita-ku, Sapporo, Japan
-
visa färre...
-
(creator_code:org_t)
- Melville, NY, United States : A I P Publishing LLC, 2016
- 2016
- Engelska.
-
Ingår i: Applied Physics Letters. - Melville, NY, United States : A I P Publishing LLC. - 0003-6951 .- 1077-3118. ; 119
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Time-resolved optical spin orientation spectroscopy was employed to investigate the temperature-dependent electron spin injection in In0.1Ga0.9As quantum well (QW) and In0.5Ga0.5As quantum dots (QDs) tunnel-coupled nanostructures with 4, 6, and 8 nm-thick GaAs barriers. The fast picosecond-ranged spin injection from QW to QDexcited states (ES) was observed to speed up with temperature, as induced by pronounced longitudinal-optical (LO)-phonon-involved multiple scattering process, which contributes to a thermally stable and almost fully spin-conserving injection within 5–180 K. The LO-phonon coupling was also found to cause accelerated electron spin relaxation of QD ES at elevated temperature, mainly via hyperfine interaction with random nuclear field.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas