CONDENSED MATTER

Direct measurements of the picosecond kinetics of heating of a spin subsystem in semimagnetic semiconducting nanostructures

A. A. Maksimov^a, E. V. Filatov^a, I. I. Tartakovskii^ab, D. R. Yakovlev^cd, A. Waag<sup>e

a</sup> Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432 Russia
^b National Research University Higher School of Economics, Moscow, 101000 Russia
^c Ioffe Institute, Russian Academy of Sciences, St. Petersburg, 194021 Russia
^d Experimentelle Physik II, University of Dortmund, D-44227 Dortmund, Germany
^e Institute of Semiconductor Technology, Braunschweig Technical University, D-38106 Braunschweig, Germany

Abstract: The kinetics of variation of the magnetization of Zn$_{0.99}$Mn$_{0.01}$Se/Be$_{0.93}$Mn$_{0.07}$Te type-II semimagnetic semiconducting superlattices in external magnetic fields has been studied using the optical technique with high time resolution. Picosecond times of transfer of the energy and spin of photoexcited carriers to a magnetic subsystem of manganese ions have been directly measured for the first time.

Received: 21.10.2019
Revised: 13.11.2019
Accepted: 14.11.2019

DOI: 10.1134/S0370274X1924007X

 English version: Journal of Experimental and Theoretical Physics Letters, 2019, 110:12, 799–803

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