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Terahertz and infrared spectroscopic evidence of phonon-paramagnon coupling in hexagonal piezomagnetic YMnO.sub.3./sub..

SYSNO ASEP	0368534
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Terahertz and infrared spectroscopic evidence of phonon-paramagnon coupling in hexagonal piezomagnetic YMnO₃.
Author(s)	Kadlec, Christelle (FZU-D)_{RID, ORCID} Goian, Veronica (FZU-D)_{RID, ORCID} Rushchanskii, K.Z. (DE) Kužel, Petr (FZU-D)_{RID, ORCID, SAI} Ležaič, M. (DE) Kohn, K. (JP) Pisarev, R. V. (RU) Kamba, Stanislav (FZU-D)_{RID, ORCID, SAI}
Source Title	Physical Review. B - ISSN 1098-0121 Roč. 84, č. 17 (2011), 174120/1-174120/8
Number of pages	8 s.
Language	eng - English
Country	US - United States
Keywords	magnons ; infrared and THz spectroscopy ; multiferroics
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GD202/09/H041 GA ČR - Czech Science Foundation (CSF)
	GA202/09/0682 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10100520 - FZU-D (2005-2011)
UT WOS	000297294500007
DOI	10.1103/PhysRevB.84.174120
Annotation	Antiferromagnetic resonance is observed in the spectra of magnetic permeability below the N´eel temperature TN.An additional weak and heavily-damped excitation is seen in the spectra of complex dielectric permittivity within the same frequency range. This excitation contributes to the dielectric spectra in both antiferromagnetic and paramagnetic phases. A detailed analysis of these results and of previously published magnon dispersion branches brought us to the conclusion that the observed absorption bands stem from phonon-phonon and phonon-paramagnon differential absorption processes.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2012

Number of the records: 1