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arxiv: 1206.2217 · v1 · pith:DTP5KP2Onew · submitted 2012-06-11 · ❄️ cond-mat.supr-con

Scaling of the physical properties in Ba(Fe,Ni)2As2 single crystals: Evidence for quantum fluctuations

Pierre Rodiere (NEEL) , Thierry Klein , Klaus Hasselbach (NEEL) , Louis Lemberger (NEEL) , A. Demuer (LNCMI) , J. Kacmarcik (CLTP) , Z. S. Wang (NEEL) , H. Q. Luo
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X. Y. Lu H. H. Wen Christophe Marcenat (SPMS-LATEQS)
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keywords lambdacrystalsdeltasingledepthdiodeevidencefluctuations
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We report on local magnetization, tunnel diode oscillators, and specific-heat measurements in a series of Ba(NixFe1-x)2As2 single crystals (0.26\leqx\leq0.74). We show that the London penetration depth \lambda(T)=\lambda(0)+\Delta\lambda(T) scales as \lambda(0)\propto1/Tc0.85$\pm$0.2, \Delta\lambda(T)\proptoT2.3$\pm$0.3 (for T

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