Effects of uniaxial pressure and annealing on the resistivity of Ba(Fe1−xCox)2As2 |
| |
Authors: | T. Liang M. Nakajima K. Kihou Y. Tomioka T. Ito C.H. Lee H. Kito A. Iyo H. Eisaki T. Kakeshita S. Uchida |
| |
Affiliation: | a Department of Physics, University of Tokyo, Tokyo 113-0033, Japan b National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan c JST, Transformative Research-Project on Iron Pnictides, Tokyo 102-0075, Japan |
| |
Abstract: | Single crystals of underdoped Ba(Fe1−xCox)2As2 were detwinned by applying uniaxial pressure. The anisotropic in-plane resistivity was measured using the Montgomery method without releasing pressure. The resistivity along the a-axis shows metallic behavior down to 5 K, while the resistivity along the b-axis shows an insulator-like behavior in some temperature range. Annealing the sample radically reduces the residual resistivity for x=0, and at the same time the anisotropy becomes much smaller at low temperatures. |
| |
Keywords: | A. Superconductors D. Electrical conductivity |
本文献已被 ScienceDirect 等数据库收录! |
|