Yb基中间价体系中Kadowaki-Woods关系的偏离
强关联电子
2009-11-10 v1
摘要
电导率的T²系数A与电子比热系数γ进行比较。结果显示，许多包含YbCuAl、YbInCu4、YbAl3和YbCu5的体系，其A/γ²值接近0.4×10⁻⁶ μΩ·cm(mol·K/mJ)²，显著小于已知的Kadowaki-Woods关系A/γ²=1.0×10⁻⁵ μΩ·cm(mol·K/mJ)²。经验上，A/γ²值较小的化合物表现出较弱的相邻间磁关联和/或几乎完全退化（J=5/2或7/2）基态。
引用
@article{arxiv.cond-mat/0302325,
title = {Deviation from the Kadowaki-Woods relation in Yb-based intermediate-valent systems},
author = {N. Tsujii and K. Yoshimura and K. Kosuge},
journal= {arXiv preprint arXiv:cond-mat/0302325},
year = {2009}
}
备注
13 pages, 3 figures, 1 table. To be published in J. Phys.: Condensed Matter