V. P. Glazkov, D. P. Kozlenko, B. N. Savenko, V. A. Somenkov, A. S. Telepnev, “Hybridization of libron and phonon modes in NH$_4$I: Neutron spectroscopy studies at pressures up to $10$ GPa”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2001, Volume 74, Issue 8,Pages 455

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Hybridization of libron and phonon modes in NH$_4$I: Neutron spectroscopy studies at pressures up to $10$ GPa

V. P. Glazkov^a, D. P. Kozlenko^b, B. N. Savenko^b, V. A. Somenkov^a, A. S. Telepnev^bc

^a Russian Research Centre "Kurchatov Institute", Moscow
^b Joint Institute for Nuclear Research, Dubna, Moskovskaya obl.
^c Institute for High Pressure Physics, Russian Academy of Sciences

Abstract: Vibrational spectra of ammonium iodide NH$_4$I were studied at pressures up to $10$ GPa by incoherent inelastic neutron scattering. The pressure dependences of the frequencies of librational and transverse optical modes suggest that they are hybridized upon pressure buildup.

PACS: 61.12.-q, 62.50.+p, 63.20.Dj

Received: 07.09.2001