Comparative study between two quantum spin systems KCuCl$_{3}$ and TlCuCl$_{3}$
材料科学
2009-11-07 v2
摘要
We have performed an {\it ab initio} study of the electronic structure of two isostructural quantum spin systems, KCuCl and TlCuCl, which have recently attracted much attention due to their unconventional magnetic properties. Our first-principles analysis shows unambiguously the role of Tl, as opposed to structural differences between the two compounds, in making TlCuCl a {\it strongly} coupled s=1/2 dimer system compared to KCuCl which shows a {\it weakly} coupled s=1/2 dimer behavior. Good agreement with the existing analysis of inelastic neutron scattering results has been observed.
引用
@article{arxiv.cond-mat/0203526,
title = {Comparative study between two quantum spin systems KCuCl$_{3}$ and TlCuCl$_{3}$},
author = {T. Saha-Dasgupta and R. Valenti},
journal= {arXiv preprint arXiv:cond-mat/0203526},
year = {2009}
}
备注
minor changes in text with additional references; in EPL format