title: Magneto-optical studies of HgTe/HgxCd1-xTe(S) core-shell nanocrystals.
abstract: The synthesis and magneto-optical properties of HgTe nanocrystals capped with HgxCd1-xTe(S) alloyed shells have been investigated. The magneto-optical measurements included the use of optically detected magnetic resonance (ODMR) and circular polarized photoluminescence (CP-PL) spectroscopy. The PL spectra suggest the existence of luminescence events from both the core HgTe and the HgxCd1-xTe(S) shells. The continuous-wave (cw) and time-resolved ODMR measurements revealed that the luminescence at the shell regime is associated with a trap-to-band recombination emission. The electron trap is comprised of a Cd-Hg mixed site, confirming the existence of an alloyed HgxCd1-xTe(S) composition. The ODMR data and the CP-PL measurements together revealed the g-values of the trapped electron and the valence band hole.
authors.affiliation: Department of Chemistry and Solid State Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel.
authors.forename: Leonid
authors.initials: L
authors.lastname: Fradkin
authors.forename: Lidia
authors.initials: L
authors.lastname: Langof
authors.forename: Efrat
authors.initials: E
authors.lastname: Lifshitz
authors.forename: Andrey
authors.initials: A
authors.lastname: Rogach
authors.forename: Nikolai
authors.initials: N
authors.lastname: Gaponik
authors.forename: Horst
authors.initials: H
authors.lastname: Weller
authors.forename: Alex
authors.initials: A
authors.lastname: Eychmüller