La$_{0.5}$Ca$_{0.5}$MnO$_3应变控制暗示弱电子-晶格耦合
介观与纳米尺度物理
2016-08-16 v2 强关联电子
摘要
我们最近曾主张单金氧体不具备电荷有序条纹，暗示电子-晶格耦合较弱[《Phys Rev Lett》 \textbf{94} (2005) 097202]。本文则基于对LaCaMnO纳米图案化薄膜的透射电子显微镜测量，独立得出相同结论。在松弛应变区域，超格栅周期相对于母晶格改变2-3%，表明两者并非紧密相关。
引用
@article{arxiv.cond-mat/0504476,
title = {Strain control of superlattice implies weak charge-lattice coupling in La$_{0.5}$Ca$_{0.5}$MnO$_3$},
author = {S. Cox and E. Rosten and J. C. Chapman and S. Kos and M. J. Calderón and D. J. Kang and P. B. Littlewood and P. A. Midgley and N. D. Mathur},
journal= {arXiv preprint arXiv:cond-mat/0504476},
year = {2016}
}
备注
4 pages, 4 figures It is now explained why the work provides evidence to support weak-coupling, and rule out charge order