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arXiv · 2205.02890

Magnetic ion relaxation time distribution within a quantum well

Aleksandra Łopion·Aleksander Bogucki·Wiktor Kraśnicki·Karolina E. Połczyńska·Wojciech Pacuski·Tomasz Kazimierczuk·Andrzej Golnik·Piotr Kossacki
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Abstract

Time-resolved optically detected magnetic resonance (ODMR) is a valuable technique to study the local deformation of the crystal lattice around magnetic ion as well as the ion spin relaxation time. Here we utilize selective Mn-doping to additionally enhance the inherent locality of the ODMR technique. We present the time-resolved ODMR studies of single {(Cd,Mg)Te/(Cd,Mn)Te} quantum wells (QWs) with manganese ions located at different positions along the growth axis -- in the center or on the sides of the quantum well. We observe that spin-lattice relaxation of Mn$^{2+}$ significantly depends on the ion-carrier wavefunction overlap at low-magnetic fields. Interestingly, the effect is clearly observed in spite of very low carrier density, which suggests the potential for control of the Mn$^{2+}$ ion relaxation rate by means of the electric field in future experiments.

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Aleksandra Łopion, Aleksander Bogucki, Wiktor Kraśnicki, Karolina E. Połczyńska, Wojciech Pacuski, Tomasz Kazimierczuk, Andrzej Golnik, Piotr Kossacki. 2022-05-05. Magnetic ion relaxation time distribution within a quantum well. https://doi.org/10.1103/physrevb.106.165309

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