Normal-state electrical resistivity and superconducting magnetic penetration depth in Eu0.5K0.5Fe2As2

Abstract

We report measurements of the temperature dependence of the electrical resistivity, ρ(T), and magnetic penetration depth, λ(T), for polycrystalline samples of Eu_0.5K_0.5Fe_2As_2 with Tc=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.

7 pages 4 figures

References in corpus (6)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Fermi-liquid instabilities at magnetic quantum phase transitions
• Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs
• Vortex phase diagram of Ba(Fe0.93Co0.07)2As2 single crystals
• High-Temperature Superconductivity in Eu0.5K0.5Fe2As2
• Is ZrB12 two gap superconductor?

Cited by in corpus (3)

• Upper critical magnetic field in K0.83Fe1.83Se2 and Eu0.5K0.5Fe2As2 single crystals
• Electron transport and anisotropy of the upper critical magnetic field in a Ba0.68K0.32Fe2As2 single crystals
• Magnetic fluctuations and superconductivity in Fe pnictides probed by electron spin resonance