In:
Superconductor Science and Technology, IOP Publishing, Vol. 35, No. 7 ( 2022-07-01), p. 075013-
Abstract:
Based on the London equation, we use a rotor-free vector potential A and current measurements by a SQUID, to determine the superconducting (SC) Pearl length Λ and coherence length ξ 0 , of ultra-thin, ring shaped, MoSi films, as a function of thickness d and temperature T . We find that T c and ξ 0 are functions of d and both jump at ξ 0 ∼ d ∼ 5 nm. At base temperature the SC stiffness, defined by 1 / λ 2 = 1 / ( Λ d ) , is an increasing function of T c . Similar behavior, known as the Uemura plot, exists in bulk layered superconductors, but with doping as an implicit parameter. We also provide the critical exponents of Λ ( T ) .
Type of Medium:
Online Resource
ISSN:
0953-2048
,
1361-6668
DOI:
10.1088/1361-6668/ac7173
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2022
detail.hit.zdb_id:
1361475-7
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