Synthesis and Properties of CaFe$_2$As$_2$ Single Crystals

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dc.creatorRonning, F.
dc.creatorKlimczuk, T.
dc.creatorBauer, E. D.
dc.creatorVolz, H.
dc.creatorThompson, J. D.
dc.date2008-06-27
dc.date2008-07-10
dc.date.accessioned2026-07-07T09:49:18Z
dc.date.available2026-07-07T09:49:18Z
dc.descriptionWe report the synthesis and basic physical properties of single crystals of CaFe2As2, an isostructural compound to BaFe2As2 which has been recently doped to produce superconductivity. CaFe2As2 crystalizes in the ThCr2Si2 structure with lattice parameters a = 3.907(4) A and c = 11.69(2) A. Magnetic susceptibility, resistivity, and heat capacity all show a first order phase transition at T_0 171 K. The magnetic susceptibility is nearly isotropic from 2 K to 350 K. The heat capacity data gives a Sommerfeld coefficient of 8.2 +- 0.3 mJ/molK2, and does not reveal any evidence for the presence of high frequency (> 300 K) optical phonon modes. The Hall coefficient is negative below the transition indicating dominant n-type carriers.
dc.descriptionPublished version, minor changes
dc.identifierhttps://arxiv.org/abs/0806.4599
dc.identifierhttp://arxiv.org/abs/0806.4599
dc.identifierJ. Phys.: Condens. Matter, 20, 322201 (2008)
dc.identifierdoi:10.1088/0953-8984/20/32/322201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/164536
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleSynthesis and Properties of CaFe$_2$As$_2$ Single Crystals
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