Spin-lattice relaxation processes of transition metal ions in a heavily cobalt doped ZnO: Phonon heating effect

Azamat, Dmitry; Badalyan, A. G.; Baranov, P. G.; Fanciulli, M.; Lančok, Ján; Hrabovský, M.; Jastrabík, Lubomír; Dejneka, Alexandr

doi:https://dx.doi.org/10.1063/1.5088588

Number of the records: 1

Spin-lattice relaxation processes of transition metal ions in a heavily cobalt doped ZnO: Phonon heating effect

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SYSNO ASEP	0511114
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Spin-lattice relaxation processes of transition metal ions in a heavily cobalt doped ZnO: Phonon heating effect
Author(s)	Azamat, Dmitry (FZU-D)_{RID, ORCID} Badalyan, A. G. (RU) Baranov, P. G. (RU) Fanciulli, M. (IT) Lančok, Ján (FZU-D)_{RID, ORCID} Hrabovský, M. (CZ) Jastrabík, Lubomír (FZU-D)_{RID, ORCID} Dejneka, Alexandr (FZU-D)_{RID, ORCID}
Number of authors	8
Article number	123903
Source Title	Journal of Applied Physics. - : AIP Publishing - ISSN 0021-8979 Roč. 126, č. 12 (2019), s. 1-7
Number of pages	7 s.
Language	eng - English
Country	US - United States
Keywords	electron-spin echo detection ; spin-lattice relaxation ; Cobalt doped ZnO single crystals
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	EF16_013/0001406 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LM2015088 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Limited access
Institutional support	FZU-D - RVO:68378271
UT WOS	000488828300036
EID SCOPUS	85072664575
DOI	10.1063/1.5088588
Annotation	Inversion recovery with electron spin-echo detection has been used to study the electron spin-lattice relaxation rates 1/T1 for transition metal impurities in heavily cobalt-doped hydrothermally grown ZnO single crystals. The relaxation dynamics of Co2+ ions dominates the phonon bottleneck effect in the Orbach-Aminov process, which involves the modulation of the zero-field-splitting tensor. The relaxation mechanism may be treated in terms of phonon heating with fast rate of energy pump from Co2+ spins into the lattice phonon modes. The measurements reveal the cross-relaxation process in which the single Co2+ ions cross-relax to exchange-coupled clusters of cobalt ions.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2020
Electronic address	https://doi.org/10.1063/1.5088588

Number of the records: 1