Massive triplet excitations in a magnetized anisotropic Haldane spin chain
强关联电子
2009-11-10 v2
摘要
Inelastic neutron scattering experiments on the Haldane-gap quantum antiferromagnet \nd are performed at mK temperatures in magnetic fields of almost twice the critical field applied perpendicular to the spin cahins. Above a re-opening of the spin gap is clearly observed. In the high-field N\'eel-ordered state the spectrum is dominated by three distinct long-lived excitation branches. Several field-theoretical models are tested in a quantitative comparison with the experimental data.
引用
@article{arxiv.cond-mat/0301424,
title = {Massive triplet excitations in a magnetized anisotropic Haldane spin chain},
author = {A. Zheludev and Z. Honda and C. Broholm and K. Katsumata and S. M. shapiro and A. Kolezhuk and S. Park and Y. Qiu},
journal= {arXiv preprint arXiv:cond-mat/0301424},
year = {2009}
}
备注
4 pages, 3 figures