Andreev reflection enhancement in semiconductor-superconductor structures

Shlomi Bouscher, Roni Winik, Alex Hayat

Research output: Contribution to journalArticlepeer-review


We develop a theoretical approach for modeling a wide range of semiconductor-superconductor structures with arbitrary potential barriers and a spatially dependent superconducting order parameter. We demonstrate asymmetry in the conductance spectrum as a result of a Schottky barrier shape. We further show that the Andreev reflection process can be significantly enhanced through resonant tunneling with appropriate barrier configuration, which can incorporate the Schottky barrier as a contributing component of the device. Moreover, we show that resonant tunneling can be achieved in superlattice structures as well. These theoretically demonstrated effects along with our modeling approach enable much more efficient Cooper pair injection into semiconductor-superconductor structures, including superconducting optoelectronic devices.

Original languageEnglish
Article number054512
JournalPhysical Review B
Issue number5
StatePublished - 20 Feb 2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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