Resonant states of a double-barrier junction

Serhii Shafranjuk*, John B Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We study resonant properties of an SIS′ IS junction with quantized Andreev bound states (ABSs); here S, S′ and I denote a superconductor, a superconductor with a smaller energy gap, and an insulating barrier, respectively. Using the quasiclassical approach we compute the local electron density of states, spatial extent of the quantized states and inelastic electron-phonon recombination rate versus junction transparency, nonmagnetic impurity concentration, and the thickness of the middle layer. We find that the local electron density of states in a low-transparency limit has sharp peaks at the ABS level positions while the inelastic electron-phonon recombination time, τe-p (ε), associated with an ABS level E0 is a sharp function of energy variable ε and diverges at ε= E0.

Original languageEnglish (US)
Article number024509
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number2
DOIs
StatePublished - Jul 1 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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