1206.2217 (Pierre Rodiere et al.)

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

Pierre Rodiere, Thierry Klein, Klaus Hasselbach, Louis Lemberger, A. Demuer, J. Kacmarcik, Z. S. Wang, H. Q. Luo, X. Y. Lu, H. H. Wen, Christophe Marcenat

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

View original: http://arxiv.org/abs/1206.2217