BaCu_2Si_2O_7: a new quasi 1-dimensional S = 1/2 antiferromagnetic chain system

Preprint

18 February 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9902251

Abstract

The new antiferromagnetic (AF) compound BaCu_2Si_2O_7 is studied by magnetic susceptibility and neutron scattering techniques. The observed behavior is dominated by the presence of loosely coupled S=1/2 chains with the intrachain AF exchange constant J = 24.1 meV. Long-range Neel ordering is observed below Tn = 9.2 K. The results are discussed within the framework of the Mean Field-RPA model for weakly interacting quantum spin chains.

Keywords

ANTIFERROMAGNETIC CHAIN
MAGNETIC SUSCEPTIBILITY
NEW ANTIFERROMAGNETIC
BACU_2SI_2O_7
CHAIN SYSTEM
SCATTERING
NEW QUASI
NEUTRON

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Version 1, 1999-02-18, ArXiv

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