Small anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1-xCox)2As2

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dc.creatorYamamoto, A.
dc.creatorJaroszynski, J.
dc.creatorTarantini, C.
dc.creatorBalicas, L.
dc.creatorJiang, J.
dc.creatorGurevich, A.
dc.creatorLarbalestier, D. C.
dc.creatorJin, R.
dc.creatorSefat, A. S.
dc.creatorMcGuire, M. A.
dc.creatorSales, B. C.
dc.creatorChristen, D. K.
dc.creatorMandrus, D.
dc.date2008-10-03
dc.date2009-02-16
dc.date.accessioned2026-07-07T12:41:28Z
dc.date.available2026-07-07T12:41:28Z
dc.descriptionWe performed high-field magnetotransport and magnetization measurements on a single crystal of the 122-phase iron pnictide Ba(Fe1-xCox)2As2. Unlike the HTS cuprates and 1111-phase oxypnictides, Ba(Fe1-xCox)2As2 showed practically no broadening of the resistive transitions under magnetic fields up to 45 T. The mass anisotropy gamma = Hc2ab/Hc2c deduced from the slopes of the upper critical field dHc2ab/dT = 4.9T/K and dHc2c/dT = 2.5T/K decreases from ~2 near Tc, to ~1.5 at lower temperatures. We observed the irreversibility field close to Hc2, and a rather unusual symmetric volume pinning force curve Fp(H) suggestive of strong pinning nano-structure.
dc.description12 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0810.0699
dc.identifierhttp://arxiv.org/abs/0810.0699
dc.identifierAppl. Phys. Lett. 94, 062511 (2009)
dc.identifierdoi:10.1063/1.3081455
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219781
dc.subjectMaterials Science
dc.subjectSuperconductivity
dc.titleSmall anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1-xCox)2As2
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