Počet záznamů: 1
Thermodynamics of Fluid Polyamorphism
- 1.
SYSNO ASEP 0491218 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Thermodynamics of Fluid Polyamorphism Tvůrce(i) Anisimov, M. A. (US)
Duška, Michal (UT-L) RID, ORCID
Caupin, F. (FR)
Amrhein, L. E. (US)
Rosenbaum, A. (US)
Sadus, R. J. (AU)Číslo článku 011004 Zdroj.dok. Physical Review X. - : American Physical Society - ISSN 2160-3308
Roč. 8, č. 1 (2018)Poč.str. 18 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova liquid phase-transition ; supercooled water ; high-pressure Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry Institucionální podpora UT-L - RVO:61388998 UT WOS 000419715500001 EID SCOPUS 85041030481 DOI 10.1103/PhysRevX.8.011004 Anotace Fluid polyamorphism is the existence of different condensed amorphous states in a single-component fluid. It is either found or predicted, usually at extreme conditions, for a broad group of very different substances, including helium, carbon, silicon, phosphorous, sulfur, tellurium, cerium, hydrogen, and tin tetraiodide. This phenomenon is also hypothesized for metastable and deeply supercooled water, presumably located a few degrees below the experimental limit of homogeneous ice formation. We present a generic phenomenological approach to describe polyamorphism in a single-component fluid, which is completely independent of the molecular origin of the phenomenon. We show that fluid polyamorphism may occur either in the presence or in the absence of fluid phase separation depending on the symmetry of the order parameter. In the latter case, it is associated with a second-order transition, such as in liquid helium or liquid sulfur. To specify the phenomenology, we consider a fluid with thermodynamic equilibrium between two distinct interconvertible states or molecular structures. A fundamental signature of this concept is the identification of the equilibrium fraction of molecules involved in each of these alternative states. However, the existence of the alternative structures may result in polyamorphic fluid phase separation only if mixing of these structures is not ideal. The two-state thermodynamics unifies all the debated scenarios of fluid polyamorphism in different areas of condensed-matter physics, with or without phase separation, and even goes beyond the phenomenon of polyamorphism by generically describing the anomalous properties of fluids exhibiting interconversion of alternative molecular states. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2019
Počet záznamů: 1