https://doi.org/10.1007/PL00011080
Uniform susceptibility of classical antiferromagnets in one and two dimensions in a magnetic field
1
Theoretische Tieftemperaturphysik, Gerhard-Mercator-Universität-Duisburg,
47048 Duisburg, Germany
2
Max-Planck-Institut für Physik komplexer Systeme,
Nöthnitzer Str. 38, 01187 Dresden, Germany
Corresponding author: a garanin@mpipks-dresden.mpg.de
Received:
20
March
2000
Published online: 15 August 2000
We simulated the field-dependent magnetization m(H,T) and the
uniform susceptibility x(H,T) of
classical Heisenberg antiferromagnets in the chain and square-lattice
geometry using Monte Carlo methods.
The results confirm the singular behavior of at small T,H: 
and 
, where D=3 is the number
of spin components, 
, 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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
