Superconductivity induced by Ni doping in BaFe$_2$As$_2$

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dc.creatorLi, L. J.
dc.creatorWang, Q. B.
dc.creatorLuo, Y. K.
dc.creatorChen, H.
dc.creatorTao, Q.
dc.creatorLi, Y. K.
dc.creatorLin, X.
dc.creatorHe, M.
dc.creatorZhu, Z. W.
dc.creatorCao, G. H.
dc.creatorXu, Z. A.
dc.date2008-09-11
dc.date2008-12-22
dc.date.accessioned2026-07-07T12:46:56Z
dc.date.available2026-07-07T12:46:56Z
dc.descriptionA series of 122 phase BaFe$_{2-x}$Ni$_x$As$_2$ ($x$ = 0, 0.055, 0.096, 0.18, 0.23) single crystals were grown by self flux method and a dome-like Ni doping dependence of superconducting transition temperature is discovered. The transition temperature $T_c^{on}$ reaches a maximum of 20.5 K at $x$ = 0.096, and it drops to below 4 K as $x$ $\geq$ 0.23. The negative thermopower in the normal state indicates that electron-like charge carrier indeed dominates in this system. This Ni-doped system provides another example of superconductivity induced by electron doping in the 122 phase.
dc.description7 pages, 5 figures, revised version, added EDX result, accepted for special issue of NJP
dc.identifierhttps://arxiv.org/abs/0809.2009
dc.identifierhttp://arxiv.org/abs/0809.2009
dc.identifierNew J. Phys. 11 (2009) 025008
dc.identifierdoi:10.1088/1367-2630/11/2/025008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/221553
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleSuperconductivity induced by Ni doping in BaFe$_2$As$_2$
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