Electrical Resistivity and Specific Heat of EuFe2As2 Single Crystals: Magnetic homologue of SrFe2As2

Abstract

We have grown single crystals of EuFe2As2 and investigated its electrical transport and thermodynamic properties. Electrical resistivity and specific heat measurements clearly establish the intrinsic nature of magnetic phase transitions at 20 K and 195 K. While the high temperature phase transition is associated with the itinerant moment of Fe, the low temperature phase transition is due to magnetic order of localized Eu-moments. Band structure calculations point out a very close similarity of the electronic structure with SrFe2As2. Magnetically, the Eu and Fe2As2 sublattice are nearly de-coupled.

References in corpus (3)

• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• Spin density wave anomaly at 140 K in the ternary iron arsenide BaFe2As2
• Correlated electronic structure of LaOFeAs

Cited by in corpus (12)

• Superconductivity induced by phosphorus doping and its coexistence with ferromagnetism in EuFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$
• High-Temperature Superconductivity in Eu0.5K0.5Fe2As2
• Possible re-entrant superconductivity in EuFe2As2 under pressure
• Electronic Structure of Fe-Based Superconductors
• EuFe${}_2$As${}_2$ under high pressure: an antiferromagnetic bulk superconductor
• Competing orders in FeAs layers
• Effects of the magnetic orderings on the dynamical conductivity: optical investigations of EuFe${}_2$As${}_2$ single crystals
• First order magnetic transition in single crystal CaFe${}_2$As${}_2$ detected by ${}^{75}$As NMR
• Effect of pressure on the magnetostructural transition in SrFe2As2
• Suppression of spin-density-wave transition and emergence of ferromagnetic ordering of Eu${}^{2+}$ moments in EuFe${}_{2-x}$Ni${}_x$As${}_2$
• Evolution of the bulk properties, structure, magnetic order, and superconductivity with Ni doping in CaFe2-xNixAs2
• Interplay between superconductivity and magnetism in K-doped EuFe2As2