Effects of the CuO chains on the anisotropic penertration depth of YBa2Cu4O8

1998/12/21 by C. Panagopoulos, Christos Panagopoulos, J. L. Tallon +5
Engineering · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #Magnetic Bearings and Levitation Dynamics #Physics of Superconductivity and Magnetism #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.cond-mat/9812333

4 pages, 3 figures

arxiv created 1998/12/23 · arxiv updated 2009/11/30

Abstract

The temperatuer dependence of the magnetic penetration depth of grain aligned YBa2Cu4O8 has been measured along the ab plane and c-axis. Both λ_ab and λ_c vary as √(T) up to 0.4Tc implying a square root density of states at low energy. The results are discussed in terms of a proximity model of alternating stacked superconducting and normal layers

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