2019
DOI: 10.1103/physrevb.100.064508
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Enhancement of penetration field in vortex matter in mesoscopic superconductors due to Andreev bound states

Abstract: We study the penetration field HP for vortex nanocrystals nucleated in micron-sized samples with edges aligned along the nodal and anti-nodal directions of the d-wave superconducting parameter of Bi2Sr2CaCu2O 8−δ . Here we present evidence that the HP for nanocrystals nucleated in samples with edges parallel to the nodal direction is larger than for the antinodal case, ∼ 72 % at low temperatures. This finding supports the theoretical proposal that surface Andreev bound states appearing in a sample with edges p… Show more

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