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Título: | Anomaly in temperature dependence of thermal transport of two hydrogen-bonded glass-forming liquids |
Autor: | Krivchikov, A.I.; Yushchenko, A.N.; Korolyuk, O.A.; Bermejo, Francisco Javier CSIC ORCID; Cabrillo García, Carlos CSIC ORCID; González, M. A. | Fecha de publicación: | 14-jun-2007 | Editor: | American Institute of Physics | Citación: | Physical Review B - Condensed Matter and Materials Physics 75: 214204 (2007) | Resumen: | The thermal conductivity of two molecular glasses (ethanol and 1-propanol) decrease with increasing temperature up to their glass transitions at Tg 97 and 98 K, respectively. Within their supercooled liquid phases, the conductivity increases with rising temperature up to a maximum which roughly coincides with the liquidus (or melting temperatures Tm 159 K and Tm 149 K, respectively). From there on, the conductivity decreases with increasing temperature, a behavior common to most liquids examined so far, exception made of liquid water. The origin of the rather different dependencies with temperature of thermal transport is understood as a competition between phonon-assisted and diffusive transport effects which are amenable to experiments using high resolution quasielastic neutron scattering and visible and ultraviolet Brillouin light-scattering spectroscopies. © 2007 The American Physical Society. | Descripción: | 6 págs.; 3 figs.; PACS number s : 66.70. f, 63.50. x, 65.20. w, 65.60. a | Versión del editor: | https://doi.org/10.1103/PhysRevB.75.214204 | URI: | http://hdl.handle.net/10261/139998 | DOI: | 10.1103/PhysRevB.75.214204 | Identificadores: | doi: 10.1103/PhysRevB.75.214204 issn: 1098-0121 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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