Field effect on the dynamics of the Ising spin glass near the percolation threshold

The effect of a uniform field H on the dynamics of the Ising spin glass Fe x Zn 1 - x F 2 , x = 0.25 , is studied through Monte Carlo simulations. The correlation function data are consistent with the droplets picture, with a single scaling variable t / t w , where t w is the waiting time under H, a...

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Bibliographic Details
Published inPhysica A Vol. 386; no. 2; pp. 644 - 647
Main Authors de Lima, K.A.P., Raposo, E.P., Coutinho-Filho, M.D.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.12.2007
Subjects
Disordered antiferromagnet
Spin glass
75.50.Ee
75.50.Lk
Spin glass
Disordered antiferromagnet
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Summary:The effect of a uniform field H on the dynamics of the Ising spin glass Fe x Zn 1 - x F 2 , x = 0.25 , is studied through Monte Carlo simulations. The correlation function data are consistent with the droplets picture, with a single scaling variable t / t w , where t w is the waiting time under H, activation over logarithmic energy barriers near the percolation threshold, x p = 0.24 , and considerable change of the glassy phase for intermediate and high H.
ISSN:0378-4371
1873-2119
DOI:10.1016/j.physa.2007.07.014