Reflectionless Tunneling Through a Double-Barrier NS Junction

J. A. Melsen, C. W. J. Beenakker

The resistance is computed of an ${\mathrm{NI}}_1{\mathrm{NI}}_2\mathrm{S}$ junction, where N = normal metal, S = superconductor, and ${\mathrm{I}}_i$ = insulator or tunnel barrier (transmissi…