Logarithmic coarsening in the Coulomb glass

Preeti Bhandari, Vikas Malik, Sanjay Puri

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


We present numerical results from a comprehensive Monte Carlo study in two dimensions (d=2) of coarsening kinetics in the Coulomb glass (CG) model at half-filling. The CG model is characterized by spin-spin interactions which are long-range Coulombic and antiferromagnetic. For the nonequilibrium properties studied by us (spatial correlation functions and domain growth laws), we find that domain growth in the CG is analogous to that in the nearest-neighbor random-field Ising model. The domain length scale L(t) shows a crossover from a regime of "power-law growth with a disorder-dependent exponent" [L(t)∼t1/z] to a regime of "logarithmic growth with a universal exponent" [L(t)∼(lnt)1/ψ].

Original languageEnglish
Article number052113
JournalPhysical Review E
Issue number5
StatePublished - 13 May 2019
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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