KFe$_2$As$_2$单晶的电阻率和上临界场
超导电性
2009-06-11 v2
摘要
我们报告了对KFeAs单晶在低至 = 0.3 K和高达17.5 T磁场下进行的电阻率测量。面内电阻率随变化的曲线在降至约50 K时呈凸形，并在约45 K以下表现出依赖性。c轴与面内电阻率之比在室温下约为10，在4.2 K时约为40。超导上临界场已从电阻率数据确定：(0) = 4.47 T，(0) = 1.25 T。各向异性参数 = / 随增加，在 = 时为6.8。曲线的强曲率表明存在强自旋顺磁效应。
引用
@article{arxiv.0903.3783,
title = {Resistivity and upper critical field in KFe$_2$As$_2$ single crystals},
author = {Taichi Terashima and Motoi Kimata and Hidetaka Satsukawa and Atsushi Harada and Kaori Hazama and Shinya Uji and Hisatomo Harima and Gen-Fu Chen and Jian-Lin Luo and Nan-Lin Wang},
journal= {arXiv preprint arXiv:0903.3783},
year = {2009}
}
备注
After minor revision, accepted for publication in J. Phys. Soc. Jpn