Local density of states in clean two-dimensional superconductor–normal metal–superconductor heterostructures

  title={Local density of states in clean two-dimensional superconductor–normal metal–superconductor heterostructures},
  author={D. Nikoli{\'c} and Wolfgang Belzig and Juan Carlos Cuevas},
  journal={Physical Review Research},
Motivated by recent advances in the fabrication of Josephson junctions in which the weak link is made of a low-dimensional non-superconducting material, we present here a systematic theoretical study of the local density of states (LDOS) in a clean 2D normal metal (N) coupled to two s-wave superconductors (S). To be precise, we employ the quasiclassical theory of superconductivity in the clean limit, based on Eilenberger's equations, to investigate the phase-dependent LDOS as function of… 

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