Počet záznamů: 1
THz–IR spectroscopy of single H.sub.2./sub.O molecules confined in nanocage of beryl crystal lattice
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SYSNO ASEP 0439787 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název THz–IR spectroscopy of single H2O molecules confined in nanocage of beryl crystal lattice Tvůrce(i) Gorshunov, B. P. (RU)
Zhukova, E.S. (RU)
Torgashev, V. I. (RU)
Motovilova, E.A. (RU)
Lebedev, V.V. (RU)
Prokhorov, A. S. (RU)
Shakurov, G.S. (RU)
Kremer, R. K. (DE)
Uskov, V.V. (RU)
Pestrjakov, E.V. (RU)
Thomas, V.G. (RU)
Fursenko, D.A. (RU)
Kadlec, Christelle (FZU-D) RID, ORCID
Kadlec, Filip (FZU-D) RID, ORCID, SAI
Dressel, M. (DE)Zdroj.dok. Phase Transitions. - : Taylor & Francis - ISSN 0141-1594
Roč. 87, 10-11 (2014), s. 966-972Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova terahertz spectroscopy ; nano-confined water molecule Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEP GA14-25639S GA ČR - Grantová agentura ČR Institucionální podpora FZU-D - RVO:68378271 UT WOS 000345840100007 EID SCOPUS 84907894079 DOI 10.1080/01411594.2014.954247 Anotace We have measured the terahertz-infrared (3-7000cm(-1)) spectra of the optical conductivity of iron-doped single crystals of beryl, (Mn,Fe):Be3Al2Si6O18, that contain lone water molecules isolated within nanometer-sized cages formed by the ions of beryl crystal lattice. By comparing the spectra with those of dehydrated crystals, we exclude phonon resonances and reconstruct the spectra determined exclusively by vibrations of the water molecules. At liquid-helium temperatures, well-known intramolecular H2O modes are observed above 1000cm(-1) and accompanied with satellite resonances that are combinations of intramolecular and external vibrations of H2O molecules. At terahertz frequencies, a broad bump centred around 20cm(-1) (at 5K) is observed with three rather narrow resonances at its high-frequency shoulder (38, 42 and 46cm(-1)). The origin of these low-energy excitations is discussed. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2015
Počet záznamů: 1