Spin correlations at finite temperature in anS=1 one-dimensional antiferromagnet
- 1 February 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 51 (5), 3289-3292
- https://doi.org/10.1103/physrevb.51.3289
Abstract
We have measured the temperature dependence of equal-time spin correlations in the quasi-one-dimensional S=1 antiferromagnet, Ni( (NENP), by magnetic neutron scattering. The temperature dependence of the correlation length can be described as exponentially activated with an activation energy similar to the Haldane gaps in NENP.
Keywords
This publication has 32 references indexed in Scilit:
- Specific heat of defects in Haldane systemsand NENP: Absence of free spin-1/2 excitationsPhysical Review Letters, 1994
- Theory of two-dimensional quantum Heisenberg antiferromagnets with a nearly critical ground statePhysical Review B, 1994
- Understanding far-infrared absorption in theS=1 antiferromagnetic chain compound NENPPhysical Review Letters, 1994
- Magnetic correlations in the quasi one-dimensional antiferromagnetic ABX3 systemsJournal of Magnetism and Magnetic Materials, 1992
- Scaling Behavior of the Generalized Susceptibility inPhysical Review Letters, 1991
- Thermal Properties of Chains of Antiferromagnetically Coupled Spins with s = 1: Numerical Evidence of the Haldane Gap at Nonzero TemperaturesEurophysics Letters, 1991
- TEST OF THE HALDANE CONJECTURE IN A 1D-HEISENBERG (S = 1) ANTIFERROMAGNET BY OPTICAL LINEAR BIREFRINGENCELe Journal de Physique Colloques, 1988
- EXPERIMENTAL EVIDENCES FOR AN HALDANE GAP IN QUASI ONE-DIMENSIONAL ANTIFERROMAGNETSLe Journal de Physique Colloques, 1988
- Presumption for a Quantum Energy Gap in the Quasi-One-Dimensional S = 1 Heisenberg Antiferromagnet Ni(C 2 H 8 N 2 ) 2 NO 2 (ClO 4 )Europhysics Letters, 1987
- Crystal structures, magnetic anisotropy properties and orbital interactions in catena-(.mu.-nitrito)-bis(ethylenediamine)nickel(II) perchlorate and triiodideInorganic Chemistry, 1982