Superconducting Fluctuations in Granular Metals with a Large Coupling Between the Grains
arXiv:cond-mat/0108104 · doi:10.1103/PhysRevB.65.094516
Abstract
We study the fluctuation conductivity of superconducting granular metals at low temperatures and strong magnetic field destroying the Cooper pairs. Explicit calculations are performed for larger values of the coupling between the grains than those considered in previous works. We show that in a broad region of the coupling constants the superconducting fluctuations still significantly reduce the conductivity leading to a negative magnetoresistance.
12 pages, 7 figures; to appear in Physical Review B march 2002
References in corpus (1)
Cited by in corpus (8)
- Interplay of Coulomb Blockade and Ferroelectricity in Nano-Granular Materials
- Fluctuation spectroscopy of granularity in superconducting structures
- Influence of the Coulomb interaction on the exchange coupling in granular magnets
- Transport theory of superconductors with singular interaction corrections
- Modulation of superconductivity by spin canting in a hybrid antiferromagnet/superconductor oxide
- Electron Transport Properties of Composite Ferroelectrics
- Interaction corrections to tunneling conductance in ballistic superconductors
- Fluctuation Spectroscopy in Granular Superconductors with Application to Boron-doped Nanocrystalline Diamond