2005/09/30 by I. S. Beloborodov, Ya. V. Fominov, A. V. Lopatin +1 · 13 citations
Earth and Planetary Sciences · Physics and Astronomy · #Composite material #Condensed matter physics #Coupling (piping) #Dispersion (optics) #Field (mathematics) #Granular material #High-pressure geophysics and materials #Intergranular corrosion #Magnetic field #Magnetoresistance #Materials science #Metallurgy #Microstructure #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spatial dispersion #State (computer science) #Superconductivity #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.74.014502
published in Physical Review B 74(1) (American Physical Society) · 6 pages, 3 figures. Version 3: extended, added discussion of experiment. Final version as published in PRB
openalex publication_date 2006/07/05 · arxiv created 2006/07/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We analyze the possibility of the formation of a magnetic-field-induced insulating state in a two-dimensional granular superconductor with relatively strong intergranular coupling and show that such a state appears in a model with spatial variations of the single-grain critical magnetic field. This model describes realistic granular samples with a dispersion in grain sizes and explains the mechanism leading to a giant peak in the magnetoresistance.