Optically Detected Magnetic Resonance of Semiconductor Quantum Dots
TECHNION - ISRAEL INST OF TECH HAIFA SOLID STATE INST
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Semiconductor quantum dots have attracted large scientific and technological interests in the last decade. This document describes our attempts to characterize the localization of carriers in CdSe and CdS quantum dots. utilizing optically detected spin and orbit magnetic resonance spectroscopy. The spin resonance resembled a typical magnetic resonance spectrum and has been analyzed in a similar manner. For example. spin Hamiltonian simulation of the paramagnetic spin interactions enabled the chemical identification of carriers trapping sites e.g.. core, surface or interface. On the other hand, the precession motion around the direction of the external magnetic field was restricted by the so-called magnetic length lambdam sr.rt.h-bareB. Still, theoretical considerations associated either with ballistic motion of carriers against the boundary, or orbital motion should enable the determination of the effective mass of an electron, hole and additional charged specie presumably a charged exciton.
- Atomic and Molecular Physics and Spectroscopy
- Electromagnetic Pulses