Slow and fast relaxation times of quantum lattice model with local multi-well potentials: phenomenological dynamics for Sn2P2S6 ferroelectric crystals

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dc.contributor.authorErdem, R.
dc.contributor.authorOzum, S.
dc.contributor.authorGuclu, N.
dc.date.accessioned2024-02-23T14:41:34Z
dc.date.available2024-02-23T14:41:34Z
dc.date.issued2022
dc.departmentNEÜen_US
dc.description.abstractAs a continuation of the previously published work [Velychko O. V., Stasyuk I. V., Phase Transitions, 2019, 92, 420], a phenomenological framework for the relaxation dynamics of quantum lattice model with multi-well potentials is given in the case of deformed Sn2P2S6 ferroelectric lattice. The framework is based on the combination of statistical equilibrium theory and irreversible thermodynamics. In order to study these dynamics in a connected way we assume that the dipole ordering or polarization (eta) and volume deformation (mu) can be treated as fluxes and forces in the sense of Onsager theory. From the linear relations between the forces and fluxes, the rate equations are derived and characterized by two relaxation times (tau(S), tau(F)) which describe the irreversible process near the equilibrium states. The behaviors of tau(S) and tau(F) in the vicinity of ferroelectric phase transitions are studied.en_US
dc.identifier.doi10.5488/CMP.25.43707
dc.identifier.issn1607-324X
dc.identifier.issn2224-9079
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85146689481en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.urihttps://doi.org/10.5488/CMP.25.43707
dc.identifier.urihttps://hdl.handle.net/20.500.12452/16906
dc.identifier.volume25en_US
dc.identifier.wosWOS:000913070600002en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInst Condensed Matter Physics Natl Acad Sciences Ukraineen_US
dc.relation.ispartofCondensed Matter Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectQuantum Lattice Modelen_US
dc.subjectFerroelectric Crystalsen_US
dc.subjectSn2p2s6en_US
dc.subjectRelaxation Timesen_US
dc.subjectOnsager Theoryen_US
dc.titleSlow and fast relaxation times of quantum lattice model with local multi-well potentials: phenomenological dynamics for Sn2P2S6 ferroelectric crystalsen_US
dc.typeArticleen_US

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