Sticky Goos-Hänchen effect at normal/superconductor interface

Lee, Soo-Young, Goussev, Arseni, Georgiou, Orestis, Gligorić, Goran and Lazarides, Achilleas (2013) Sticky Goos-Hänchen effect at normal/superconductor interface. Europhysics Letters, 103. p. 20004. ISSN 0295-5075

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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.

Item Type: Article
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Arseni Goussev
Date Deposited: 16 Aug 2013 12:03
Last Modified: 13 Oct 2019 00:32

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