Electrical resistivity and specific heat of single-crystalline EuFe2As2: A magnetic homologue of SrFe2As2

H. S. Jeevan, Z. Hossain, Deepa Kasinathan, H. Rosner, C. Geibel, and P. Gegenwart
Phys. Rev. B 78, 052502 – Published 5 August 2008

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 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 sublattices are nearly decoupled.

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  • Received 24 June 2008

DOI:https://doi.org/10.1103/PhysRevB.78.052502

©2008 American Physical Society

Authors & Affiliations

H. S. Jeevan1,*, Z. Hossain2, Deepa Kasinathan3, H. Rosner3, C. Geibel3, and P. Gegenwart1

  • 1I. Physikalisches Institut, Georg-August-Universität Göttingen, D-37077 Göttingen, Germany
  • 2Department of Physics, Indian Institute of Technology, Kanpur 208016, India
  • 3Max Planck Institute for Chemical Physics of Solids, D-01187 Dresden, Germany

  • *Jeevan.Hirale@phys.uni-goettingen.de

See Also

Antiferromagnetic transition in EuFe2As2: A possible parent compound for superconductors

Zhi Ren, Zengwei Zhu, Shuai Jiang, Xiangfan Xu, Qian Tao, Cao Wang, Chunmu Feng, Guanghan Cao, and Zhu’an Xu
Phys. Rev. B 78, 052501 (2008)

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Vol. 78, Iss. 5 — 1 August 2008

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