Low-temperature thermal and elastoacoustic properties of butanol glasses: Study of position isomerism effects around the boson peak
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
American Physical SocietyDate
2012-03-19Citation
10.1103/PhysRevB.85.104206
Physical Review B 85.10 (2012): 104206
ISSN
1098-0121; 1550-235XDOI
10.1103/PhysRevB.85.104206Funded by
We acknowledge financial support by the Spanish Ministry of Science within program CONSOLIDER Nanociencia Molecular CSD2007-00010 and by the Comunidad de Madrid through the project NANOBIOMAGNET S2009/MAT-1726.Project
Gobierno de España. CSD2007-00010; Comunidad de Madrid. S2009/MAT-1726/NANOBIOMAGNETEditor's Version
http://dx.doi.org/10.1103/PhysRevB.85.104206Subjects
FísicaRights
© 2012 American Physical SocietyAbstract
We have concurrently measured the specific heat, the thermal conductivity, and the longitudinal and transverse sound velocities at low temperature of glasses from different isomers of butanol (n-butanol, sec-butanol and isobutanol), as well as the low-temperature specific heat for the crystals of n-butanol, isobutanol and tert-butanol. Whereas the elastic constants both for crystals and glasses are found to be almost independent of the position of the hydrogen bonds, the thermal properties at low temperatures of these glasses at a few kelvin (around the boson peak in the reduced specific heat or around the plateau in the thermal conductivity) are found to vary strongly. Our experiments clearly contradict other works or models claiming a Debye scaling of the boson peak, and hence of the excess low-temperature specific heat of glasses. Data analysis based upon the soft-potential model and its extensions allows us to estimate the Ioffe-Regel limit in these and other alcohol glasses, finding a correlation with the boson-peak position in agreement with that previously reported by other groups
Files in this item
Google Scholar:Hassaine, Merzak
-
Ramos Ruiz, Miguel Ángel
-
Krivchikov, A. I.
-
Sharapova, I. V.
-
Korolyuk, O. A.
-
Jiménez-Riobóo, Rafael J.
This item appears in the following Collection(s)
Related items
Showing items related by title, author, creator and subject.
-
Effects of ayahuasca on mental health and quality of life in naïve users: A longitudinal and cross-sectional study combination
Jiménez-Garrido, Daniel F.; Gómez-Sousa, María; Ona, Genís; Dos Santos, Rafael G.; Hallak, Jaime E.C.; Alcázar-Córcoles, Miguel Ángel; Bouso, José Carlos
2020-12-01