Elasticity-Driven Nanoscale Electronic Structure in Superconductors

Details Elasticity-Driven Nanoscale Electronic Structure in Superconductors Elasticity-Driven Nanoscale Electronic Structure in Superconductors

2003-04-29

arxiv.org/abs/cond-mat/0304668v2

Physics

Condensed Matter

Superconductivity

5 pages, 5 figures, reference added, accepted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.91.057004

The effects of long-range anisotropic elastic deformations on electronic structure in superconductors are analyzed within the framework of the Bogoliubov-de Gennes equations. Cases of twin boundaries and isolated defects are considered as illustrations. We find that the superconducting order parameter is depressed in the regions where pronounced lattice deformation occurs. The calculated local density of states suggests that the electronic structure is strongly modulated in response to lattice deformations, and propagates to longer distances. In particular, this allows the trapping of low-lying quasiparticle states around defects. Some of our predictions can be directly tested by STM experiments.

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