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Distribution of the Energy Gap in Space for Superconducting Nb
Phys. Rev. B 2, 97 – Published 1 July, 1970
DOI: https://doi.org/10.1103/PhysRevB.2.97
Abstract
Examination of available tunneling data from junctions oriented on single-crystal niobium shows that the observed superconducting energy gap values are grouped nonrandomly in space. These groupings are consistent with a relationship between and Fermi-surface topology, but also suggest a significant role for phonon anisotropy.
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