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Fizika Tverdogo Tela, 2020 Volume 62, Issue 11, Pages 1866–1869 (Mi ftt8255)

Impurity centers

Jahn–Teller Cr$^{2+}$ centers in a CdSe crystal

G. S. Shakurova, V. V. Gudkovb, I. V. Zhevstovskikhbc, M. N. Sarychevb, Yu. V. Korostelind

a Zavoisky Physical Technical Institute, Kazan Scientific Center of the Russian Academy of Sciences
b Institute of Physics and Technology of the Ural Federal University
c Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Ekaterinburg
d P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow

Abstract: Impurity Cr$^{2+}$ ions in the CdSe crystal are studied by tunable EPR spectroscopy in the frequency range of 70–320 GHz. The discovered Jahn–Teller tetragonal distortions of the nearest environment of the chromium ion confirm the results of recent ultrasound studies. The set of spectroscopic parameters that allows obtaining agreement between the calculates and experimental angular and field–frequency dependences of the EPR spectra is determined.

Keywords: high-frequency EPR spectroscopy, Jahn–Teller effect, semiconductor crystals, bivalent chromium.

Received: 17.03.2020
Revised: 17.03.2020
Accepted: 17.03.2020

DOI: 10.21883/FTT.2020.11.50063.058


 English version:
Physics of the Solid State, 2020, 62:11, 2101–2104

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© Steklov Math. Inst. of RAS, 2025