科研之友
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摘要
We report measurements of the temperature dependence of the electrical resistivity, rho(T), and magnetic pen-etration depth, lambda(T), for polycrystalline samples of Eu0.5K0.5Fe2As2 with T (c) = 31 K. rho(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.
- 出版日期2009-5
