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Type: Artigo de evento
Title: Competing Orders In Underdoped (ba1-xkx)fe 2as2
Author: Urbano R.R.
Green E.L.
Moulton W.G.
Reyes A.P.
Kuhns P.L.
Bittar E.M.
Adriano C.
Pagliuso P.G.
Abstract: We report 75As Nuclear Magnetic Resonance (NMR) measurements in the high-Tc superconductor (Ba1-xKx)Fe 2As2 in the underdoped regime. A structural transition at Ts ≃110 K is followed by an antiferromagnetic (AFM) order at TN ≃102 K for our x = 0.16 single crystal [1]. Superconductivity (SC) also appears at Tc ≃20 K. We find that the ordered Fe moment (S) is reduced upon hole-doping. Both spectrum analysis and relaxation measurements indicate that pinned vortices are present below Tc and SC is coexisting with AFM fluctuations. © Published under licence by IOP Publishing Ltd.
Rights: aberto
Identifier DOI: 10.1088/1742-6596/273/1/012107
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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