Magneto-optics of excitons interacting with magnetic ions in CdSe/CdMnS colloidal nanoplatelets

Abstract

Excitons in diluted magnetic semiconductors represent excellent probes for studying the magnetic properties of these materials. Various magneto-optical effects, which depend sensitively on the exchange interaction of the excitons with the localized spins of the magnetic ions can be used for probing. Here, we study core/shell CdSe/(Cd,Mn)S colloidal nanoplatelets hosting diluted magnetic semiconductor layers. The inclusion of the magnetic Mn${}^{2+}$ ions is evidenced by three magneto-optical techniques using high magnetic fields up to 15 T: polarized photoluminescence, optically detected magnetic resonance, and spin-flip Raman scattering. In particular, information on the Mn${}^{2+}$ concentration in the CdS shell layers can be obtained from the spin-lattice relaxation dynamics of the Mn${}^{2+}$ spin system.

References in corpus (11)

• Tunable magnetic exchange interactions in manganese-doped inverted core/shell ZnSe/CdSe nanocrystals
• Addressing the exciton fine structure in colloidal nanocrystals: the case of CdSe nanoplatelets
• Electron and hole g-factors and spin dynamics of negatively charged excitons in CdSe/CdS colloidal nanoplatelets with thick shells
• Surface spin magnetism controls the polarized exciton emission from CdSe nanoplatelets
• Direct Measurements of Magnetic Polarons in Cd${}_{1-x}$Mn${}_x$Se Nanocrystals from Resonant Photoluminescence
• Carrier-Dopant Exchange Interactions in Mn-doped PbS Colloidal Quantum Dots
• Single and double electron spin-flip Raman scattering in CdSe colloidal nanoplatelets
• Control of spin dynamics with laser pulses: Generation of entangled states of donor-bound electrons in a Cd1-xMnxTe quantum well
• Engineering of spin-lattice relaxation dynamics by digital growth of diluted magnetic semiconductor CdMnTe
• Förster energy transfer of dark excitons enhanced by a magnetic field in an ensemble of CdTe colloidal nanocrystals
• Realization of Universal Quantum Gates with Spin-Qudits in Colloidal Quantum Dots

Cited by in corpus (8)

• A hole-Cr${}^{+}$ nano-magnet in a semiconductor quantum dot
• Theory of single and double electron spin-flip Raman scattering in semiconductor nanoplatelets
• Angle-resolved optically detected magnetic resonance as a tool for strain determination in nanostructures
• Bright-Dark Exciton Interplay Evidenced by Spin Polarization in CdSe/CdMnS Nanoplatelets
• Spin dynamics of positively charged excitons in Cr${}^{+}$-doped quantum dots probed by resonant photoluminescence
• Magnetic ion relaxation time distribution within a quantum well
• Charging of colloidal nanoplatelets: effect of Coulomb repulsion on spin and optoelectronic properties
• Electron, hole and exciton effective g-factors in semiconductor nanocrystals