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Optically Detected Spin and Orbit Resonance of Semiconductor Quantum Dots
Author(s) -
Lifshitz E.,
Glozman A.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200103)224:2<541::aid-pssb541>3.0.co;2-z
Subject(s) - exciton , resonance (particle physics) , spin (aerodynamics) , spin–orbit interaction , electron paramagnetic resonance , spectroscopy , quantum dot , luminescence , electron , condensed matter physics , semiconductor , atomic physics , materials science , molecular physics , physics , chemistry , nuclear magnetic resonance , optoelectronics , quantum mechanics , thermodynamics
The luminescence spectrum of CdSe/CdS core–shell nanocrystals contains a dominant exciton band located at the CdSe core and an additional weak non‐excitonic band, associated with trapped carriers. The present paper describes our efforts to identify the influence of CdSe/CdS interfaces on the localization of photogenerated species, utilizing optically detected magnetic spin and spin–orbit resonance spectroscopy (ODMR). The spin resonance (SR) spectrum showed two resonance signals: the first associated with a trapped hole in a symmetric site within the core, and a second, corresponding to trapped electrons in an anisotropic interface defect site. The spin–orbit resonance (SOR) signal data are presented.