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Title: Maximum screening fields of superconducting multilayer structures

Journal Article · · AIP Advances
DOI:https://doi.org/10.1063/1.4905711· OSTI ID:1167048

Here, 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 Hs of 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 ~0.1 μm at the Nb surface could increase Hs ≃ 240 mT of a clean Nb up to Hs ≃ 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.

Research Organization:
Old Dominion Univ., Norfolk, VA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0010081
OSTI ID:
1167048
Alternate ID(s):
OSTI ID: 1420667; OSTI ID: 1444103
Journal Information:
AIP Advances, Journal Name: AIP Advances Vol. 5 Journal Issue: 1; ISSN 2158-3226
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

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Figures / Tables (3)