轨道驱动的自旋配对在三维非磁性Mott绝缘体BaVS₃中的实验：单晶研究证据
强关联电子
2009-10-31 v2 材料科学
摘要
对BaVS₃单晶的静态电气和磁学性质进行了测量，考察了结构转变(T_S=240K)、金属-绝缘体转变(T_MI=69K)以及疑似轨道有序转变(T_X=30K)。电阻率在金属态和绝缘态几乎各向同。T_X处磁各向异性的异常信号表明系统进入一种有序的低温态。结果在最低晶场准双重态中解释为轨道有序和自旋配对。T_X<T<T_MI的无序绝缘体被描述为非磁性配对的经典液体。
引用
@article{arxiv.cond-mat/9911122,
title = {Orbitally Driven Spin Pairing in the 3D Non-Magnetic Mott Insulator BaVS3: Evidence from Single Crystal Studies},
author = {G. Mihaly and I. Kezsmarki and F. Zamborszky and M. Miljak and K. Penc and P. Fazekas and H. Berger and L. Forro},
journal= {arXiv preprint arXiv:cond-mat/9911122},
year = {2009}
}
备注
4 pages, 5 figures, revtex, epsf, and multicol style. Problem with figures fixed. To appear in Phys. Rev. B Rap. Comm