Sticky Goos-Hänchen effect at normal/superconductor interface

Soo-Young Lee, Arseni Goussev, Orestis Georgiou, Goran Gligorić, Achilleas Lazarides

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We study the quantum Goos-Hänchen (GH) effect for wave-packet dynamics at a normal/superconductor (NS) interface. We find that the effect is amplified by a factor, with EF the Fermi energy and Δ the gap. Interestingly, the GH effect appears only as a time delay without any lateral shift, and the corresponding delay length is about, with the Fermi wavelength. This makes the NS interface "sticky" when, since typically GH effects are of wavelength order. This "sticky" behavior can be further enhanced by a resonance mode in the NSNS interface. Finally, for a large Δ, the resonance-mode effect makes a transition from the Andreev to the specular reflection as the width of the sandwiched superconductor is reduced.
Original languageEnglish
Pages (from-to)20004
JournalEurophysics Letters
Volume103
DOIs
Publication statusPublished - 2013

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