Density of States in Superconductor - Normal Metal - Superconductor Junctions
arXiv:cond-mat/9707056 · doi:10.1134/1.567374
Abstract
We consider the chi_0 dependence of the density of states inside the normal metal of a superconductor - normal metal - superconductor (SNS) junction.Here chi_0 is the phase difference of two superconductors of the junction. It is shown that in the absence of electron-electron interaction the energy dependence of the density of states has a gap which decreases as chi_0 increases and closes at chi_0= pi. Both the analytical expressions for the chi_0 dependence of the density of states and the results of numerical simulations are presented.
7 pages with 4 included epsf figures, published version with small changes