• Accepted Paper

Multiple Andreev reflection spectroscopy of spin-resolved proximity states

A. A. Golubov and M. Yu. Kupriyanov

Phys. Rev. B - Accepted 2 November, 2026

DOI: https://doi.org/10.1103/pspn-zpf3

Abstract

We study coherent multiple Andreev reflections (MAR) in short constrictions connecting superconductor–ferromagnet bilayers with parallel exchange fields. Proximity-induced spectral reconstruction produces split and redistributed differential-resistance anomalies, modifying both odd- and even-order subharmonic features, unlike a rigid Zeeman shift of BCS spectra. The shifted anomalies are approximately governed by the interval between the parent superconducting gap edge and an exchange-dependent spectral singularity. Spectral-interval estimates are also presented for antiparallel alignment. Channel-transparency averaging extends the description from short ballistic constrictions to short diffusive multichannel junctions, where the characteristic anomalies survive. These findings provide a route to probing spin-resolved proximity states through two-terminal charge transport.

Export citation

Export citation

Choose format for download:

Download Citation

If the author has provided any supplemental materials with this article they will be available upon publication of the version of record.

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation