Checkerboard density of states in strong-coupling superconductors

Details Checkerboard density of states in strong-coupling superconductors Checkerboard density of states in strong-coupling superconductors

2004-07-15

arxiv.org/abs/cond-mat/0407401v1

Physics

Condensed Matter

Superconductivity

4 pages, 1 figure

Scientific paper

The Bogoliubov-de Gennes (BdG) equations are solved in the strong-coupling limit, where real-space (preformed) pairs bose-condense with finite center-of-mass momenta. There are two energy scales in this regime, a temperature independent incoherent gap $\Delta_p$ and a temperature dependent coherent gap $\Delta_c (T)$, modulated in real space. The single-particle density of states (DOS) reveals checkerboard modulations similar to the tunnelling DOS in cuprates.

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