CdSe/ZnSe quantum dot with a single Mn{sup 2+} ion—A new system for a single spin manipulation

Journal Article · Sat Mar 21 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4913831· OSTI ID:22399286

Smoleński, T., E-mail: [e-mail] ^[1]

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1. Institute of Experimental Physics, Faculty of Physics, University of Warsaw, ul. Hoża 69, 00-681 Warsaw (Poland)

We present a magneto-optical study of individual self-assembled CdSe/ZnSe quantum dots doped with single Mn{sup 2+} ions. Properties of the studied dots are analyzed analogously to more explored system of Mn-doped CdTe/ZnTe dots. Characteristic sixfold splitting of the neutral exciton emission line as well as its evolution in the magnetic field are described using a spin Hamiltonian model. Dynamics of both exciton recombination and Mn{sup 2+} spin relaxation are extracted from a series of time-resolved experiments. Presence of a single dopant is shown not to affect the average excitonic lifetime measured for a number of nonmagnetic and Mn-doped dots. On the other hand, non-resonant pumping is demonstrated to depolarize the Mn{sup 2+} spin in a quantum dot placed in external magnetic field. This effect is utilized to determine the ion spin relaxation time in the dark.

• OSTI ID: 22399286
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CADMIUM SELENIDES
CADMIUM TELLURIDES
DOPED MATERIALS
EMISSION
HAMILTONIANS
LIFETIME
MAGNETIC FIELDS
MAGNETO-OPTICAL EFFECTS
MANGANESE IONS
PUMPING
QUANTUM DOTS
RECOMBINATION
RELAXATION TIME
SPIN
TIME RESOLUTION
ZINC SELENIDES
ZINC TELLURIDES