2002/09/19 by S. Salem-Sugui, S. Salem-Sugui, Jr, Mark Friesen +6 · 1 citation
Mathematics · Physics and Astronomy · #Condensed matter physics #Critical field #Diamagnetism #Magnetic field #Magnetic properties of thin films #Magnetization #Materials science #Mathematics #Metallurgy #Niobium #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Scaling #Superconductivity #Theoretical and Computational Physics #Transition temperature #Universality (dynamical systems) #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.66.134521
5 pages, 6 figures, Accepted for publication in Phys.Rev. B
arxiv created 2002/09/19 · openalex publication_date 2002/10/29 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have performed a magnetic study of a bulk metallic sample of Nb with critical temperature Tc=8.5K. Magnetization versus temperature (M vs T) data obtained for fixed magnetic fields above 1 kOe show a superconducting transition which becomes broader as the field is increased. The data are interpreted in terms of the diamagnetic lowest Landau level (LLL) fluctuation theory. The scaling analysis gives values of the superconducting transition temperature Tc(H) consistent with Hc2(T). We search for universal three-dimensional LLL behavior by comparing scaling results for Nb and YBaCuO, but obtain no evidence for universality.