Implanted muon spin spectroscopy on 2-O-adamantane: a model system that mimics the liquid[Formula: see text]glasslike transitions

Autor: M, Romanini, J L, Tamarit, L C, Pardo, F J, Bermejo, R, Fernandez-Perea, F L, Pratt

Publikováno v: Journal of physics. Condensed matter : an Institute of Physics journal. 29(8)

The transition taking place between two metastable phases in 2-O-adamantane, namely the [Formula: see text] cubic, rotator phase and the lower temperature P2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::c613b5081e2a777b0e62546775b944ed
https://pubmed.ncbi.nlm.nih.gov/28095369

Microscopic collective dynamics in liquidpara−H2

Autor: Francisco Javier Bermejo, Javier Dawidowski, Peter Verkerk, M. T. Fernández-Díaz, Carlos Cabrillo, R. Fernandez-Perea, S. M. Bennington, B. Fåk

Publikováno v: Physical Review B. 60:15154-15162

Well-defined phonons with strong anomalous (upward) dispersion are observed by inelastic neutron scattering in liquid $para\ensuremath{-}{\mathrm{H}}_{2}$ at a temperature of 15.7 K. The damping, being very small for the low-$Q$ phonons, increases wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7d25d1e89e6e19c18c6b2fc3fbc21a47
https://doi.org/10.1103/physrevb.60.15154

Anomalous temperature dependence of the low-frequency vibrational density of states in vitreous B2O3

Autor: Francisco Javier Bermejo, C.-K. Loong, R. Fernandez-Perea, A de Bernabé

Publikováno v: Physics Letters A. 235:169-175

Inelastic neutron-scattering measurements of v-B 2 O 3 reveal an upshift in energy of the first moment of the vibrational density of states for frequencies below ≈ 15 meV as temperature increases from 20 to 300 K. Such a stiffening is at odds with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b782ab2fc8b6cbe80adb23dfa57e8b9
https://doi.org/10.1016/s0375-9601(97)00622-1

Collective excitations in liquid D-2 confined within the mesoscopic pores of a MCM-41 molecular sieve

Autor: C. Mondelli, M.A. Gonzalez, F. Albergamo, C. Carbajo, M.J. Torralvo, E. Enciso, F. J. Bermejo, R. Fernandez-Perea, C. Cabrillo, V. Leon, M.L. Saboungi

Publikováno v: Physical review. B, Condensed matter and materials physics 73 (2006): 94206. doi:10.1103/PhysRevB.73.094206
info:cnr-pdr/source/autori:C. Mondelli; M.A. Gonzalez; F. Albergamo; C. Carbajo; M.J. Torralvo; E. Enciso; F. J. Bermejo; R. Fernandez-Perea; C. Cabrillo; V. Leon, M.L. Saboungi/titolo:Collective excitations in liquid D-2 confined within the mesoscopic pores of a MCM-41 molecular sieve/doi:10.1103%2FPhysRevB.73.094206/rivista:Physical review. B, Condensed matter and materials physics/anno:2006/pagina_da:94206/pagina_a:/intervallo_pagine:94206/volume:73

We present a comparative study of the excitations in bulk and liquid D-2 confined within the pores of MCM-41. The material (Mobile Crystalline Material-41) is a silicate obtained by means of a template that yields a partially crystalline structure co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=cnr_________::0c00714abe6e7c474da764f6f31c0f2f

Quantum effects on liquid dynamics as evidenced by the presence of well-defined collective excitations in liquid para-hydrogen

Autor: R. Fernandez-Perea, Kenichi Kinugawa, Peter Verkerk, B. Fåk, Javier Dawidowski, M. T. Fernández-Díaz, Carlos Cabrillo, F. J. Bermejo, Stephen M. Bennington

Publikováno v: Physical review letters. 84(23)

The origin of the well-defined collective excitations found in liquid $\mathrm{para}\ensuremath{-}{\mathrm{H}}_{2}$ by recent experiments is investigated. The persistence of their relatively long lifetimes down to microscopic scales is well accounted

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfe18d19528c4775d4d66dd7e72fa09e
https://pubmed.ncbi.nlm.nih.gov/10990943