2009/02/12 by V. A. Gasparov, H. S. Jeevan, P. Gegenwart
Materials Science · Physics and Astronomy · #Crystallite #Electrical resistivity and conductivity #Frequency dependence #High-temperature superconductivity #Iron-based superconductors research #Penetration (warfare) #Penetration depth #Rare-earth and actinide compounds #Superconductivity #Superconductivity in MgB2 and Alloys #Temperature measurement #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1134/s0021364009060071
7 pages 4 figures
arxiv created 2009/02/12 · openalex publication_date 2009/05/01 · arxiv updated 2015/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report measurements of the temperature dependence of the electrical resistivity, ρ(T), and magnetic pen-etration depth, λ(T), for polycrystalline samples of Eu0.5K0.5Fe2As2 with T c = 31 K. ρ(T) follows a linear temperature dependence above T c and bends over to a weaker temperature dependence around 150 K. The magnetic penetration depth, determined by radio frequency technique displays an unusual minimum around 4 K which is associated with short-range ordering of localized Eu3+ moments.