Phenomenological Dynamics of Ising Magnets in the Presence of Magnetic Field: Widom Lines Captured from Slow Relaxation Time
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Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A complete phenomenological description for the relaxation dynamics of the Ising ferromagnets in the presence of external magnetic field h is given by using the pair approximation. To study the relaxation dynamics, we calculate two characteristic times (denoted as ?S, ?F ) using the rate constants which satisfy the Onsager reciprocity theorem. Temperature/magnetic field variations of ?S and ?F are investigated. We have shown that the extrema of the curves obtained for ?S when h 6= 0 determine the loci of correlation length maxima or the Widom lines. The results are compared with those of response functions and thermodynamic curvature. We observe that they exactly match that for the magnetic susceptibility.
Açıklama
Anahtar Kelimeler
Relaxation Times, Ising Model, Pair Approximation, Widom Line
Kaynak
ACTA PHYSICA POLONICA A
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
140
Sayı
3
Künye
Özüm, S. (2021). Phenomenological Dynamics of Ising Magnets in the Presence of Magnetic Field: Widom Lines Captured from Slow Relaxation Time. Acta Physica Polonica A, 140(3), 252-257.
