Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs

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dc.creatorYamamoto, A.
dc.creatorJiang, J.
dc.creatorTarantini, C.
dc.creatorCraig, N.
dc.creatorPolyanskii, A. A.
dc.creatorKametani, F.
dc.creatorHunte, F.
dc.creatorJaroszynski, J.
dc.creatorHellstrom, E. E.
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.date2008-05-09
dc.date.accessioned2026-07-07T09:45:47Z
dc.date.available2026-07-07T09:45:47Z
dc.descriptionThe new rare-earth arsenate superconductors are layered, low carrier density compounds with many similarities to the high-Tc cuprates. An important question is whether they also exhibit weak-coupling across randomly oriented grain-boundaries. In this work we show considerable evidence for such weak-coupling by study of the dependence of magnetization in bulk and powdered samples. Bulk sample magnetization curves show very little hysteresis while remanent magnetization shows almost no sample size dependence, even after powdering. We conclude that these samples exhibit substantial electromagnetic granularity on a scale approximating the grain size, though we cannot yet determine whether this is intrinsic or extrinsic.
dc.description3 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0805.1282
dc.identifierhttp://arxiv.org/abs/0805.1282
dc.identifierAppl. Phys. Lett. vol. 92, no. 252501 (2008)
dc.identifierdoi:10.1063/1.2952195
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/163314
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titleEvidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs
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