Spin susceptibility, phase diagram, and quantum criticality in the electron-doped high Tc Superconductor Ba[Fe(1-x)Co(x)]2As2

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dc.creatorNing, F. L.
dc.creatorAhilan, K.
dc.creatorImai, T.
dc.creatorSefat, A. S.
dc.creatorJin, R.
dc.creatorMcGuire, M. A.
dc.creatorSales, B. C.
dc.creatorMandrus, D.
dc.date2008-11-11
dc.date.accessioned2026-07-07T12:28:48Z
dc.date.available2026-07-07T12:28:48Z
dc.descriptionWe report a systematic investigation of Ba[Fe(1-x)Co(x)]2As2 based on transport and 75-As NMR measurements, and establish the electronic phase diagram. We demonstrate that doping progressively suppresses the uniform spin susceptibility and low frequency spin fluctuations. The optimum superconducting phase emerges at x_c~0.08 when the tendency toward spin ordering completely diminishes. Our findings point toward the presence of a quantum critical point near x_c between the SDW (spin density wave) and superconducting phases.
dc.description5 Figures
dc.identifierhttps://arxiv.org/abs/0811.1617
dc.identifierhttp://arxiv.org/abs/0811.1617
dc.identifierJ. Phys. Soc. Jpn. 78 (2009) 013711
dc.identifierdoi:10.1143/JPSJ.78.013711
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215661
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleSpin susceptibility, phase diagram, and quantum criticality in the electron-doped high Tc Superconductor Ba[Fe(1-x)Co(x)]2As2
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