2001/02/20 by E. Cimpoiasu, G. A. Levin, C. C. Almasan +2 · 1 citation
Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.63.104515
published as PRB 63, 104515 (2001) · 9 pages, 5 figures
openalex publication_date 2001/02/20 · arxiv created 2001/04/03 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report magnetoconductivity measurements on YBa2Cu3Ox (x=6.25 and 6.36) single crystals. Our main result is that both the in-plane \ensuremathΔ\ensuremathσab and out-of-plane \ensuremathΔ\ensuremathσc magnetoconductivities exhibit the field dependence characteristic of ``two-dimensional'' quantum interference in applied magnetic fields H||c. Namely, \ensuremathΔ\ensuremathσc,ab\ensuremath∝lnH/H0>0, with \ensuremathΔ\ensuremathσc/\ensuremathσc substantially greater than \ensuremathΔ\ensuremathσab/\ensuremathσab. We interpret this result as an evidence of interlayer incoherence in these crystals, so that the phase-coherent trajectories are mostly confined to one bilayer.