Continuous wave and pulsed EPR study of Cd.sub.1-x./sub.Mn.sub.x./sub.Te crystals with different Mn content

0567789 - FZÚ 2023 RIV UA eng J - Článek v odborném periodiku
Savchenko, Dariia - Riasna, M.K. - Chursanova, M.V. - Matveeva, T.V. - Popenko, N.A. - Ivanchenko, I.V. - Kalabukhova, E.N.
Continuous wave and pulsed EPR study of Cd_1-xMn_xTe crystals with different Mn content.
Semiconductor Physics Quantum Electronics & Optoelectronics. Roč. 25, č. 3 (2022), s. 275-281. ISSN 1560-8034. E-ISSN 1605-6582
Grant CEP: GA MŠMT(CZ) EF16_019/0000760
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: EPR * spin relaxation time * manganese * cadmium manganese telluride
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 0.9, rok: 2022
Způsob publikování: Open access

The cadmium manganese telluride (Cd1–xMnxTe) crystals (x<0.001 and x=0.02, 0.04, 0.1) grown using the Bridgman method were studied by applying continuous wave and pulsed electron paramagnetic resonance (EPR) spectroscopy in the wide temperature range. The Cd1–xMnxTe crystals with x < 0.001 revealed the EPR spectrum from isolated Mn2+ with g=2.0074(3),A=56.97*10–4 cm^–1,a=30.02*10–4 cm^–1, while Cd1–xMnxTe crystals with x=0.02…0.04 are characterized by two single broad isotropic EPR lines of Lorentzian shape (g~2.009 and g~1.99) due to Mn clusters of different sizes. The EPR spectrum of Cd1–xMnxTe crystals with x=0.01 consists of the single broad line at g~2.01 due to higher level of homogeneity inherent to these crystals. The temperature dependence of spin relaxation times for the isolated Mn2+ center in the Cd1–xMnxTe crystals with x<0.001 has been described using the conceptions of Orbach process for TM–1 and two-phonon Raman process for T1–1.
Trvalý link: https://hdl.handle.net/11104/0339036