Physics – Condensed Matter
Scientific paper
1995-11-22
Phys. Rev. B 53, 3428 (1996).
Physics
Condensed Matter
18 pages, RevTEX, 3 figures available upon request, accepted to Phys. Rev. B
Scientific paper
10.1103/PhysRevB.53.3428
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 CsNiCl$_3$-type compounds.
Zaliznyak Igor A.
Zhitomirsky Michael E.
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