Suppression of spin-density-wave transition and emergence of ferromagnetic ordering of Eu$^{2+}$ moments in EuFe$_{2-x}$Ni$_{x}$As$_{2}$

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dc.creatorRen, Zhi
dc.creatorLin, Xiao
dc.creatorTao, Qian
dc.creatorJiang, Shuai
dc.creatorZhu, Zengwei
dc.creatorWang, Cao
dc.creatorCao, Guanghan
dc.creatorXu, Zhu'an
dc.date2008-10-15
dc.date2009-03-05
dc.date.accessioned2026-07-07T12:57:17Z
dc.date.available2026-07-07T12:57:17Z
dc.descriptionWe present a systematic study on the physical properties of EuFe$_{2-x}$Ni$_{x}$As$_{2}$ (0$\leq$\emph{x}$\leq$0.2) by electrical resistivity, magnetic susceptibility and thermopower measurements. The undoped compound EuFe$_{2}$As$_{2}$ undergoes a spin-density-wave (SDW) transition associated with Fe moments at 195 K, followed by antiferromagnetic (AFM) ordering of Eu$^{2+}$ moments at 20 K. Ni doping at the Fe site simultaneously suppresses the SDW transition and AFM ordering of Eu$^{2+}$ moments. For $x\geq$0.06, the magnetic ordering of Eu$^{2+}$ moments evolves from antiferromagnetic to ferromagnetic (FM). The SDW transition is completely suppressed for $x\geq$0.16, however, no superconducting transition was observed down to 2 K. The possible origins of the AFM-to-FM transition and the absence of superconductivity in EuFe$_{2-x}$Ni$_{x}$As$_{2}$ system are discussed.
dc.description5 pages, 5 figures, accepted for publication in PRB
dc.identifierhttps://arxiv.org/abs/0810.2595
dc.identifierhttp://arxiv.org/abs/0810.2595
dc.identifierPHYSICAL REVIEW B 79, 094426 (2009).
dc.identifierdoi:10.1103/PhysRevB.79.094426
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224881
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleSuppression of spin-density-wave transition and emergence of ferromagnetic ordering of Eu$^{2+}$ moments in EuFe$_{2-x}$Ni$_{x}$As$_{2}$
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