Broad-band spectroscopy of nanoconfined water molecules

Belyanchikov, M. A.; Savinov, Maxim; Bedran, Z.V.; Bednyakov, Petr; Proschek, P.; Prokleška, J.; Torgashev, V. I.; Zhukova, E.S.; Zhukov, S.S.; Kadyrov, L.S.; Thomas, V.; Dudka, A.; Zhugayevych, A.; Anzin, V.B.; Kremer, R. K.; Fischer, J.K.H.; Lunkenheimer, P.; Loidl, A.; Uykur, E.; Dressel, M.; Gorshunov, B.

doi:https://dx.doi.org/10.1007/978-3-030-31866-6_2

Number of the records: 1

Broad-band spectroscopy of nanoconfined water molecules

1.

SYSNO ASEP	0536076
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Broad-band spectroscopy of nanoconfined water molecules
Author(s)	Belyanchikov, M. A. (RU) Savinov, Maxim (FZU-D)_{RID, ORCID} Bedran, Z.V. (RU) Bednyakov, Petr (FZU-D)_{RID, ORCID} Proschek, P. (CZ) Prokleška, J. (CZ) Torgashev, V. I. (RU) Zhukova, E.S. (RU) Zhukov, S.S. (RU) Kadyrov, L.S. (RU) Thomas, V. (RU) Dudka, A. (RU) Zhugayevych, A. (RU) Anzin, V.B. (RU) Kremer, R. K. (DE) Fischer, J.K.H. (DE) Lunkenheimer, P. (DE) Loidl, A. (DE) Uykur, E. (DE) Dressel, M. (DE) Gorshunov, B. (RU)
Number of authors	21
Source Title	IFMBE Proceedings, 77. - New York : Springer International Publishing, 2020 / Tiginyanu I. ; Sontea V. ; Railean S. - ISSN 1680-0737 - ISBN 978-3-030-31865-9
Pages	s. 7-11
Number of pages	5 s.
Publication form	Print - P
Action	4th International Conference on Nanotechnologies and Biomedical Engineering (ICNBME-2019)
Event date	18.09.2019 - 21.09.2019
VEvent location	Chisinau
Country	MD - Moldova, republic of
Event type	WRD
Language	eng - English
Country	US - United States
Keywords	quantum criticality ; relaxations ; soft phonon ; nanoconfined water ; ferroelectricity ; spectroscopy
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GA15-08389S GA ČR - Czech Science Foundation (CSF)
Institutional support	FZU-D - RVO:68378271
UT WOS	000552314200002
EID SCOPUS	85075606864
DOI	10.1007/978-3-030-31866-6_2
Annotation	We have performed broad-band spectroscopic investigations of vibrational and relaxational excitations of water molecules confined to nanocages within artificial beryl and mineral cordierite crystals. Signatures of quantum critical phenomena within the H2O molecular network are registered in beryl. In cordierite, a density functional analysis is applied to reconstruct the potential energy landscape experienced by H2O molecules, revealing a pronounced anisotropy with a potential well of about 10 meV for the molecular dipole moment aligned along the b-axis.This anisotropy leads to a strongly temperature dependent and anisotropic relaxational response of the dipoles at radiofrequencies with the activation energies corresponding to the barriers of the rotational potential. At T≈3 K, we identify signatures of a transition onto a glassy state composed by clusters of H2O dipoles.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2021

Number of the records: 1