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Thermodynamics of the Classical Planar Ferromagnet Close to the Zero-Temperature Critical Point : A Many-Body Approach
Joint Authors
Naddeo, A.
Esposito, U.
De Cesare, L.
Campana, L. S.
Cavallo, A.
Source
Advances in Condensed Matter Physics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-23
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
We explore the low-temperature thermodynamic properties and crossovers of a d-dimensional classical planar Heisenberg ferromagnet in a longitudinal magnetic field close to its field-induced zero-temperature critical point by employing the two-time Green’s function formalism in classical statistical mechanics.
By means of a classical Callen-like method for the magnetization and the Tyablikov-like decoupling procedure, we obtain, for any d, a low-temperature critical scenario which is quite similar to the one found for the quantum counterpart.
Remarkably, for d>2 the discrimination between the two cases is found to be related to the different values of the shift exponent which governs the behavior of the critical line in the vicinity of the zero-temperature critical point.
The observation of different values of the shift-exponent and of the related critical exponents along thermodynamic paths within the typical V-shaped region in the phase diagram may be interpreted as a signature of emerging quantum critical fluctuations.
American Psychological Association (APA)
Campana, L. S.& Cavallo, A.& De Cesare, L.& Esposito, U.& Naddeo, A.. 2012. Thermodynamics of the Classical Planar Ferromagnet Close to the Zero-Temperature Critical Point : A Many-Body Approach. Advances in Condensed Matter Physics،Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-485688
Modern Language Association (MLA)
Campana, L. S.…[et al.]. Thermodynamics of the Classical Planar Ferromagnet Close to the Zero-Temperature Critical Point : A Many-Body Approach. Advances in Condensed Matter Physics No. 2012 (2012), pp.1-15.
https://search.emarefa.net/detail/BIM-485688
American Medical Association (AMA)
Campana, L. S.& Cavallo, A.& De Cesare, L.& Esposito, U.& Naddeo, A.. Thermodynamics of the Classical Planar Ferromagnet Close to the Zero-Temperature Critical Point : A Many-Body Approach. Advances in Condensed Matter Physics. 2012. Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-485688
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-485688