Bean-Livingston barrier enhancement on nodal surface of the d-wave superconductor YBa2Cu3O{7-x}

Details Bean-Livingston barrier enhancement on nodal surface of the d-wave superconductor YBa2Cu3O{7-x} Bean-Livingston barrier enhancement on nodal surface of the d-wave superconductor YBa2Cu3O{7-x}

2009-01-13

arxiv.org/abs/0901.1774v1

Physics

Condensed Matter

Superconductivity

4 pages

Scientific paper

Vortex entry into (110) oriented YBa$_2$Cu$_3$O$_{7-x}$ films has been studied by tunneling into Andreev - Saint-James bound states, whose energy is shifted by surface currents. At low temperatures, the characteristic field for vortex entry has been found to increase up to values several times higher than that of the Bean-Livingston entry field for conventional superconductors, in agreement with recent theoretical predictions.

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