Abbreviated Journal Title
Appl. Phys. Lett.
Keywords
RECOMBINATION; Physics, Applied
Abstract
The authors report measurements of room temperature spin dynamics in InGaAs quantum dots using time-resolved differential transmission and Faraday rotation techniques. They observe an enhancement of the electron spin lifetime by an order of magnitude for direct optical pumping of the quantum dot ground state compared to optical pumping of the GaAs barriers. These findings indicate that the optical excitation conditions can have a critical influence on the spin kinetics, a result which may account for the wide variation of spin lifetimes reported to date. The enhancement in spin lifetime observed here is attributed to the reduction of phonon-mediated spin-flip scattering.
Journal Title
Applied Physics Letters
Volume
90
Issue/Number
15
Publication Date
1-1-2007
Document Type
Article
DOI Link
Language
English
First Page
3
WOS Identifier
ISSN
0003-6951
Recommended Citation
Robb, J. L.; Chen, Y.; Timmons, A.; Hall, K. C.; Shchekin, O. B.; and Deppe, D. G., "Time-resolved Faraday rotation measurements of spin relaxation in InGaAs/GaAs quantum dots: Role of excess energy" (2007). Faculty Bibliography 2000s. 7582.
https://stars.library.ucf.edu/facultybib2000/7582
Comments
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