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Journal of Statistical Physics

, Volume 163, Issue 3, pp 568–575 | Cite as

Ground State Properties of Ising Chain with Random Monomer–Dimer Couplings

  • S. Bahareh Seyedein Ardebili
  • Reza Sepehrinia
Article

Abstract

We study analytically the one-dimensional Ising model with a random binary distribution of ferromagnetic and antiferromagnetic exchange couplings at zero temperature. We introduce correlations in the disorder by assigning a dimer of one type of coupling with probability x, and a monomer of the other type with probability \(1-x\). We find that the magnetization behaves differently from the original binary model. In particular, depending on which type of coupling comes in dimers, magnetization jumps vanish at a certain set of critical fields. We explain the results based on the structure of ground state spin configuration.

Keywords

Magnetization Random monomer–dimer couplings Correlations 

Notes

Acknowledgments

We would like to thank Bernard Derrida for illuminating discussion and pointing out the possibility of flipping a combination of clusters at the critical fields. We also thank Ehsan Khatami for critical reading of the manuscript.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • S. Bahareh Seyedein Ardebili
    • 1
  • Reza Sepehrinia
    • 2
    • 3
  1. 1.Department of Theoretical Physics and AstrophysicsUniversity of TabrizTabrizIran
  2. 2.Department of PhysicsUniversity of TehranTehranIran
  3. 3.School of PhysicsInstitute for Research in Fundamental Sciences, IPMTehranIran

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