Static properties of a quasi-one-dimensional antiferromagnet in a magnetic field
Abstract
We calculate the effect of zero-point fluctuations on the magnetostatic properties of a quasi-one-dimensional antiferromagnetic helimagnet with and without in-plane anisotropy. We find substantial reduction of the uniform susceptibility and the sublattice magnetization from their classical values and appreciable renormalization of the spin-flop field at T=0. The magnetization curve varies nonlinearly at small fields and is described by a universal formula at high fields. The results are compared with numerical simulations on one-dimensional systems and measurements in the CsNiCl3-type compounds.
- Publication:
-
Physical Review B
- Pub Date:
- February 1996
- DOI:
- 10.1103/PhysRevB.53.3428
- arXiv:
- arXiv:cond-mat/9511106
- Bibcode:
- 1996PhRvB..53.3428Z
- Keywords:
-
- 75.10.Jm;
- 75.50.Ee;
- 75.60.Ej;
- Quantized spin models;
- Antiferromagnetics;
- Magnetization curves hysteresis Barkhausen and related effects;
- Condensed Matter
- E-Print:
- 18 pages, RevTEX, 3 figures available upon request, accepted to Phys. Rev. B