多铁性TbMnO3中局域电子态的有序化：软X射线共振散射研究
强关联电子
2008-09-30 v1
摘要
软X射线共振散射（XRS）被首次用于直接观测多铁性TbMnO3中Mn和Tb位点上局域电子态的有序化。当入射光子能量调谐到Mn L边或Tb M边时，观察到X射线散射截面的巨大共振增强，这分别提供了Mn 3d和Tb 4f电子态的信息。XRS信号的温度依赖性以模型无关的方式确定，在高温相（28 K ≤ T ≤ 42 K）中，Mn 3d子晶格显示出长程有序。发现Tb 4f子晶格仅在进入28 K以下的铁电/磁联合态时才有序化。我们的结果与最近的硬XRS实验（对空间扩展轨道敏感）和中子散射进行了讨论。
引用
@article{arxiv.0809.2937,
title = {Ordering of localized electronic states in multiferroic TbMnO3: a soft X-ray resonant scattering study},
author = {T. R. Forrest and S. R. Bland and S. B. Wilkins and H. C. Walker and T. A. W. Beale and P. D. Hatton and D. Prabhakaran and A. T. Boothroyd and D. Mannix and F. Yakhou and D. F. McMorrow},
journal= {arXiv preprint arXiv:0809.2937},
year = {2008}
}
备注
9 pages, paper has been accepted for publication in Journal of Physics: Condensed Matter as a fast track communication