Checkerboard density of states in strong-coupling superconductors

A. S. Alexandrov

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arXiv · cond-mat/0407401

Checkerboard density of states in strong-coupling superconductors

A. S. Alexandrov

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Abstract

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 $Δ_p$ and a temperature dependent coherent gap $Δ_c (T)$, 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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A. S. Alexandrov. 2004-07-15. Checkerboard density of states in strong-coupling superconductors. https://arxiv.org/abs/cond-mat/0407401

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