Uniform susceptibility of classical antiferromagnets in one and two dimensions in a magnetic field

  • D. Hinzke
  • U. Nowak
  • D.A. Garanin
Article

Abstract.

We simulated the field-dependent magnetization m(H,T) and the uniform susceptibility x of classical Heisenberg antiferromagnets in the chain and square-lattice geometry using Monte Carlo methods. The results confirm the singular behavior of x at small T,H: limT0 limH0X(H,T)=1/(2J0)(1-1/D) and limT0 limH0X(H,T)=1/(2J0), where D=3 is the number of spin components, J0=zJ, and z is the number of nearest neighbors. A good agreement is achieved in a wide range of temperatures T and magnetic fields H with the first-order 1/D expansion results (D.A. Garanin, J. Stat. Phys. 83, 907 (1996)).

PACS. 75.10.Hk Classical spin models - 75.50.Ee Antiferromagnetics - 75.40.Mg Numerical simulation studies 

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2000

Authors and Affiliations

  • D. Hinzke
    • 1
  • U. Nowak
    • 1
  • D.A. Garanin
    • 2
  1. 1.Theoretische TieftemperaturphysikGerhard-Mercator-Universität-DuisburgDuisburgGermany
  2. 2.Max-Planck-Institut für Physik komplexer SystemeDresdenGermany

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