填充方钴矿RPt4Ge12 (R = Nd, Eu)中的磁有序
强关联电子
2011-03-03 v1
摘要
稀土金属填充方钴矿RPt4Ge12 (R=La-Nd, Eu)展现出多种不同的基态,例如LaPt4Ge12和PrPt4Ge12分别表现为常规和非常规超导,而CePt4Ge12表现为中间价态行为。在本工作中,我们通过比热、直流磁化率和磁化强度研究了NdPt4Ge12和EuPt4Ge12的磁态。NdPt4Ge12在T_N1=0.67 K和T_N2=0.58 K处显示出两个磁相变,而EuPt4Ge12在磁有序温度1.78 K以下展现出复杂的磁相图。比热表明,在NdPt4Ge12中,Nd3+的晶场(CEF)基态为四重态,而在EuPt4Ge12中,Eu2+态如预期完全简并。
引用
@article{arxiv.1007.3844,
title = {Magnetic order in the filled skutterudites RPt4Ge12 (R = Nd, Eu)},
author = {M. Nicklas and R. Gumeniuk and W. Schnelle and H. Rosner and A. Leithe-Jasper and F. Steglich and Yu. Grin},
journal= {arXiv preprint arXiv:1007.3844},
year = {2011}
}
备注
accepted for publication in the proceedings of SCES 2010