2004/05/31 by Ruth Goldin, B. Horovitz, Baruch Horovitz · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.72.024518
published as Phys. Rev. B72, 024518 (2005) · 14 pages, 5 figures. New sections III, V. Companion to following article on "Decoupling and Depinning II: Flux lattices in disordered layered superconductors"
arxiv created 2005/05/29 · openalex publication_date 2005/07/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the decoupling transition of flux lattices in layered superconductors at which the Josephson coupling J is renormalized to zero. We identify the order parameter and related correlations; the latter are shown to decay as a power law in the decoupled phase. Within the second-order renormalization group we find that the transition is always continuous, in contrast with results of the self-consistent harmonic approximation. The critical temperature for weak J is \ensuremath∼1∕B, where B is the magnetic field, while for strong J it is \ensuremath∼1∕√(B) and is strongly enhanced. We show that renormaliztion group can be used to evaluate the Josephson plasma frequency and find that for weak J it is \ensuremath∼1∕BT2 in the decoupled phase.