Article: Spin-lattice relaxation of (Cd,Mn)Te co-doped with Co ions
The study investigates the effect of cobalt ion addition on the spin-lattice relaxation rate in the (Cd,Mn)Te system. Measurements using time-resolved spectroscopy of single (Cd,Mn,Co)Te/(Cd,Mg)Te quantum wells under a magnetic field reveal that even a small cobalt admixture significantly reduces the Mn relaxation time. The results indicate that cobalt ions, with their faster spin relaxation, serve as centers that enhance the spin relaxation of manganese ions, resulting in a faster and more multi-exponential relaxation process. This suggests that spin-lattice relaxation is primarily limited by the spin diffusion time to cobalt ions.
Authors: Aleksandra Łopion, Kacper Oreszczuk, Aleksander Bogucki, Karolina Ewa Połczyńska,Wojciech Pacuski, Tomasz Kazimierczuk, Andrzej Golnik and Piotr Kossacki
Solid State Communications,Volume 396, 2025, 115753,
Published 19 November 2024
https://doi.org/10.1016/j.ssc.2024.115753
