有序条纹相中载流子自旋关联
强关联电子
2009-11-10 v1 超导电性
摘要
我们通过中子无穀散射探测到条纹有序 La5/3Sr1/3NiO4 中低能磁激发光谱的拡散成分。该拡散散射形成方形图案,边缘平行且垂直于条纹方向。信号具有色散特性,最高能量约为 ~10 meV。在 2 meV 处,随温度升高而散射强度减弱,在 100 K 时几乎不可见。我们认为该信号来源于条纹电子之间动态的准一维反亚磁关联。
引用
@article{arxiv.cond-mat/0310631,
title = {Spin correlations among the charge carriers in an ordered stripe phase},
author = {A. T. Boothroyd and P. G. Freeman and D. Prabhakaran and A. Hiess and M. Enderle and J. Kulda and F. Altorfer},
journal= {arXiv preprint arXiv:cond-mat/0310631},
year = {2009}
}
备注
4 pages, 4 figures. To be published in Physical Review Letters