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

V. A. Gasparov; H. S. Jeevan; P. Gegenwart

doi:10.1134/S0021364009060071

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

Superconductivity 2015-05-13 v1 Strongly Correlated Electrons

Authors: V. A. Gasparov , H. S. Jeevan , P. Gegenwart

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Abstract

We report measurements of the temperature dependence of the electrical resistivity, \rho(T), and magnetic penetration depth, \lambda(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.

Keywords

magnetization magnetic structure thermal properties of materials

Cite

@article{arxiv.0902.2190,
  title  = {Normal-state electrical resistivity and superconducting magnetic penetration depth in Eu0.5K0.5Fe2As2},
  author = {V. A. Gasparov and H. S. Jeevan and P. Gegenwart},
  journal= {arXiv preprint arXiv:0902.2190},
  year   = {2015}
}

Comments

7 pages 4 figures

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