期刊
PHYSICAL REVIEW B
卷 92, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.92.045412
关键词
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资金
- Polish Ministry of Science and Higher Education, NCN projects [DEC-2011/01/B/ST3/02406, DEC-2011/02/A/ST3/00131, DEC-2012/07/N/ST3/03665, DEC-2012/07/N/ST3/03130, DEC-2013/09/D/ST3/03768]
- Polish Foundation for Science (FNP)
- European Union [316244]
- EuroMagNET under EU Contract [228043]
We present the study of the spin-lattice relaxation of an isolated Mn2+ ion in a single CdTe/ZnTe quantum dot. The measurements are done in a wide range of magnetic field. The spin-lattice relaxation rate is determined in a time resolved experiment. The ion spin state is driven out of equilibrium using optical orientation of the Mn2+ spin in a system of two coupled dots. Then the light is switched off and the Mn2+ ion spin relaxes. The Mn2+ spin state is measured after switching the light on again. We discuss the magnetic field dependence of the spin-relaxation rate in light of two theoretical models: one based on scattering of transverse acoustic phonons in the presence of a finite uniaxial Mn2+ spin anisotropy, and the second relying on presence of quantum dot charge state fluctuations.
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