Ba_2CuGe_2O_7中场致非公度-公度相变
强关联电子
2009-10-30 v1
摘要
我们报道了在Dzyaloshinskii-Moriya螺旋反铁磁体Ba_2CuGe_2O_7中观察到公度-非公度相变。该相变由沿四方结构的c轴（即自旋旋转平面内）施加的外磁场诱导。体磁测量和中子衍射实验表明，该相变发生在临界场Hc=2.1T。磁结构周期和磁化强度随磁场变化的实验结果与我们对Dzyaloshinskii螺旋磁体中公度-非公度相变模型的精确解析解定量吻合。
引用
@article{arxiv.cond-mat/9706146,
title = {Field-induced incommensurate-to-commensurate transition in Ba_2CuGe_2O_7},
author = {A. Zheludev and S. Maslov and G. Shirane and Y. Sasago and N. Koide and K. Uchinokura},
journal= {arXiv preprint arXiv:cond-mat/9706146},
year = {2009}
}
备注
11 double column pages, 9 figures, submitted to PRB