http://www.cnr.it/ontology/cnr/individuo/prodotto/ID282506

Role of Disorder in the Thermodynamics and Atomic Dynamics of Glasses (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Role of Disorder in the Thermodynamics and Atomic Dynamics of Glasses (Articolo in rivista) (literal)

Anno

2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1103/PhysRevLett.112.025502 (literal)

Alternative label

Chumakov, A. I.; Monaco, G.; Fontana, A.; Bosak, A.; Hermann, R. P.; Bessas, D.; Wehinger, B.; Crichton, W. A.; Krisch, M.; Rueffer, R.; Baldi, G.; Carini, G., Jr.; Carini, G.; D'Angelo, G.; Gilioli, E.; Tripodo, G.; Zanatta, M.; Winkler, B.; Milman, V.; Refson, K.; Dove, M. T.; Dubrovinskaia, N.; Dubrovinsky, L.; Keding, R.; Yue, Y. Z. (2014)
Role of Disorder in the Thermodynamics and Atomic Dynamics of Glasses
in Physical review letters (Print); The American Physical Society, College Park, MD 20740-3844 (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Chumakov, A. I.; Monaco, G.; Fontana, A.; Bosak, A.; Hermann, R. P.; Bessas, D.; Wehinger, B.; Crichton, W. A.; Krisch, M.; Rueffer, R.; Baldi, G.; Carini, G., Jr.; Carini, G.; D'Angelo, G.; Gilioli, E.; Tripodo, G.; Zanatta, M.; Winkler, B.; Milman, V.; Refson, K.; Dove, M. T.; Dubrovinskaia, N.; Dubrovinsky, L.; Keding, R.; Yue, Y. Z. (literal)

Pagina inizio

025502-1 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.025502 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

112 (literal)

Rivista

Physical review letters (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

6 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

2 (literal)

Note

Scopu (literal)
ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1 European Synchrotron Radiation Facility, F-38043 Grenoble, France; 2 Dipartimento di Fisica, Università di Trento, I-38123 Povo, Trento, Italy;3 IPCF-CNR, UOS di Roma, c/o Roma University La Sapienza, I-00185 Roma, Italy; 4 Jülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; 5 Faculté des Sciences, Université de Liège, B-4000 Liège, Belgium; 6 IMEM-CNR, Area delle Scienze, I-43124 Parma, Italy; 7 IPCF-CNR, UOS di Messina, Viale F. Stagno d'Alcontres 37, I-98158 Messina, Italy; 8 Dipartimento di Fisica e Scienze della Terra, Università di Messina, Viale F. Stagno d'Alcontres 31, I-98166 Messina, Italy; 9 Dipartimento di Fisica, Università di Perugia, I-60123 Perugia, Italy; 10 Geowissenschaften, Goethe-Universität, Altenhoeferallee 1, D-60438, Frankfurt a.M., Germany; 11 Accelrys, 334 Cambridge Science Park, Cambridge CB4 0WN, United Kingdom; 12 STFC Rutherford Appleton Laboratory, Chilton, Didcot Oxfordshire OX11 0QX, United Kingdom; 13 Materials Research Institute and School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom; 14 Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, D-95440 Bayreuth, Germany; 15 Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany; 16 Max Planck Institut for the Science of Light, D-91058 Erlangen, Germany; 17 Section of Chemistry, Aalborg University, DK-9000 Aalborg, Denmark (literal)

Titolo

Role of Disorder in the Thermodynamics and Atomic Dynamics of Glasses (literal)

Abstract

We measured the density of vibrational states (DOS) and the specific heat of various glassy and crystalline polymorphs of SiO2. The typical (ambient) glass shows a well-known excess of specific heat relative to the typical crystal (alpha-quartz). This, however, holds when comparing a lower-density glass to a higher-density crystal. For glassy and crystalline polymorphs with matched densities, the DOS of the glass appears as the smoothed counterpart of the DOS of the corresponding crystal; it reveals the same number of the excess states relative to the Debye model, the same number of all states in the low-energy region, and it provides the same specific heat. This shows that glasses have higher specific heat than crystals not due to disorder, but because the typical glass has lower density than the typical crystal. (literal)

Editore