Document Type

Article

Publication Date

2015

DOI

10.1063/1.4905711

Publication Title

AIP Advances

Volume

5

Issue

1

Pages

017112 (1-8)

Abstract

It is shown that a multilayer comprised of alternating thin superconducting and insulating layers on a thick substrate can fully screen the applied magnetic field exceeding the superheating fields Hsof both the superconducting layers and the substrate, the maximum Meissner field is achieved at an optimum multilayer thickness. For instance, a dirty layer of thickness ~0.1μm at the Nb surface could increase Hs similar or equal to 240 mT of a clean Nb up to Hs similar or equal to 290 mT. Optimized multilayers of Nb3Sn, NbN, some of the iron pnictides, or alloyed Nb deposited onto the surface of the Nb resonator cavities could potentially double the rf breakdown field, pushing the peak accelerating electric fields above 100 MV/m while protecting the cavity from dendritic thermomagnetic avalanches caused by local penetration of vortices.

Comments

Open access is through a Creative Commons Licence.

(https://creativecommons.org/licenses/by/3.0/)

Original Publication Citation

Gurevich, A. (2015). Maximum screening fields of superconducting multilayer structures. AIP Advances, 5(1), 017112. doi: 10.1063/1.4905711

ORCID

0000-0003-0759-8941 (Gurevich)

Download

Share

COinS