Andreev Reflection Eigenvalue Density in Mesoscopic Conductors
P. Samuelsson, W. Belzig, Yu. V. Nazarov
DOI 10.1103/PhysRevLett.92.196807 · Physical Review Letters
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Abstract
The energy-dependent Andreev reflection eigenvalues determine the transport properties of normal-superconducting systems. We evaluate the eigenvalue density to get insight into the formation of resonant electron-hole transport channels. The circuit-theory-like method developed can be applied to any generic mesoscopic conductor or combinations thereof. We present the results for experimentally relevant cases of a diffusive wire and a double tunnel junction.
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