Electron spin dynamics of Ce.sup.3+./sup. ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation

Azamat, Dmitry; Belykh, V.V.; Yakovlev, D.R.; Fobbe, F.; Feng, D.H.; Evers, E.; Jastrabík, Lubomír; Dejneka, Alexandr; Bayer, M.

doi:https://dx.doi.org/10.1103/PhysRevB.96.075160

Number of the records: 1

Electron spin dynamics of Ce.sup.3+./sup. ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation

1.

SYSNO ASEP	0477955
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Electron spin dynamics of Ce³⁺ ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation
Author(s)	Azamat, Dmitry (FZU-D)_{RID, ORCID} Belykh, V.V. (DE) Yakovlev, D.R. (DE) Fobbe, F. (DE) Feng, D.H. (DE) Evers, E. (DE) Jastrabík, Lubomír (FZU-D)_{RID, ORCID} Dejneka, Alexandr (FZU-D)_{RID, ORCID} Bayer, M. (DE)
Number of authors	9
Article number	075160
Source Title	Physical Review B. - : American Physical Society - ISSN 2469-9950 Roč. 96, č. 7 (2017), s. 1-10
Number of pages	10 s.
Language	eng - English
Country	US - United States
Keywords	electron spin dynamics ; Ce³⁺ ions ; YAG crystals ; pulse-EPR ; Faraday rotation
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	LO1409 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GA16-22092S GA ČR - Czech Science Foundation (CSF)
Institutional support	FZU-D - RVO:68378271
UT WOS	000408620800001
EID SCOPUS	85028985064
DOI	10.1103/PhysRevB.96.075160
Annotation	The spin relaxation dynamics of Ce3+ ions in heavily cerium-doped YAG crystals is studied using pulse-EPR and time-resolved pump-probe Faraday rotation. Both techniques address the 4f ground state, while pump-probe Faraday rotation also provides access to the excited 5d state. We measure a millisecond spin-lattice relaxation time T1, a microsecond spin coherence time T2, and a ~10 ns inhomogeneous spin dephasing time T*2 for the Ce3+ ground state at low temperatures. The spin-lattice relaxation of Ce3+ ions is due to modified Raman processes involving the optical phonon mode at ~125 cm -1. The relaxation at higher temperature goes through a first excited level of the 2F5/2 term at about hν≈ 228 cm -1. Effects provided by the hyperfine interaction of the Ce3+ with the 27Al nuclei are observed.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2018

Number of the records: 1