<div class="csl-bib-body">
<div class="csl-entry">Bodenseher, A., Hofmann, D., & Eisterer, M. (2024, April 29). <i>Assessing the Meissner State of a Square Superconducting Thin Film by Numerical Simulations Utilizing the Fluxoid Quantization</i> [Conference Presentation]. 9th International Conference on Superconductivity and Magnetism, Fethiye - Ölüdeniz, Turkey. http://hdl.handle.net/20.500.12708/216679</div>
</div>
-
dc.identifier.uri
http://hdl.handle.net/20.500.12708/216679
-
dc.description.abstract
Empirical observations have shown that the product of normal state conductivity and critical temperature is proportional to the superfluid density, which in turn is inversely proportional to the squared penetration depth $\varrho_{s} \propto \frac{1 {\lambda^{2}}$\[1\]. This relation -- known as Homes' scaling -- seems to hold for many conventional and unconventional superconductors. However, its validity and theoretical explanation are still under debate. Furthermore, the superfluid density correlates to the depairing current density $J_{d}$ $\propto \frac{\rho_{s}}{\xi}$ and the core energy of a flux vortex and consequently the available energy gain for efficient flux pinning enabling high critical current densities. Measurements of the critical temperature and normal state conductivity are quite straightforward; however, measurements of the penetration depth are not as trivial, but are highly desirable and may help to elucidate fundamental mechanisms of superconductivity.
Different approaches have been reported in literature to measure the penetration depth, ranging from muon spin resonance, mutual inductance measurements, microwave resonance spectroscopy, to magnetization measurements i.e. measuring the magnetic moment of the sample and comparing it to a perfect diamagnetic response with χ=-1. The mathematics is straightforward for an infinite geometry; however, complications arise for finite sample geometries due to demagnetization effects.
We present a novel approach for numerically calculating the response of superconducting square thin films in the Meissner phase in a homogenous magnetic field utilizing the fluxoid quantization and taking advantage of symmetries while spanning the grid over our sample. Advantages, limitations, numeric details, the influence of the film thickness and overall geometry will be discussed and put into context of ac SQUID magnetometry experiments.
en
dc.description.sponsorship
European Commission
-
dc.description.sponsorship
Österr. Akademie der Wissenschaften
-
dc.language.iso
en
-
dc.subject
superconductivity
en
dc.subject
simulation
en
dc.subject
london penetration depth
en
dc.subject
numerics
en
dc.title
Assessing the Meissner State of a Square Superconducting Thin Film by Numerical Simulations Utilizing the Fluxoid Quantization
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
0000000000
-
dc.relation.grantno
MG2021-3, MG2023-5
-
dc.type.category
Conference Presentation
-
tuw.project.title
High-temperature superconducting materials for fusion magnets. The partner project is KKKÖ ME
-
tuw.project.title
Matching Grant zu EUROfusion ME
-
tuw.researchTopic.id
C6
-
tuw.researchTopic.id
C1
-
tuw.researchTopic.id
M4
-
tuw.researchTopic.name
Modeling and Simulation
-
tuw.researchTopic.name
Computational Materials Science
-
tuw.researchTopic.name
Non-metallic Materials
-
tuw.researchTopic.value
25
-
tuw.researchTopic.value
25
-
tuw.researchTopic.value
50
-
tuw.publication.orgunit
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
-
tuw.author.orcid
0000-0002-2959-1962
-
tuw.author.orcid
0009-0002-2910-5394
-
tuw.author.orcid
0000-0002-7160-7331
-
tuw.event.name
9th International Conference on Superconductivity and Magnetism
en
tuw.event.startdate
27-04-2024
-
tuw.event.enddate
04-05-2024
-
tuw.event.online
On Site
-
tuw.event.type
Event for scientific audience
-
tuw.event.place
Fethiye - Ölüdeniz
-
tuw.event.country
TR
-
tuw.event.presenter
Bodenseher, Alexander
-
tuw.event.track
Multi Track
-
wb.sciencebranch
Physik, Astronomie
-
wb.sciencebranch.oefos
1030
-
wb.sciencebranch.value
100
-
item.openairetype
conference paper not in proceedings
-
item.cerifentitytype
Publications
-
item.grantfulltext
none
-
item.languageiso639-1
en
-
item.openairecristype
http://purl.org/coar/resource_type/c_18cp
-
item.fulltext
no Fulltext
-
crisitem.project.funder
European Commission
-
crisitem.project.funder
Österr. Akademie der Wissenschaften
-
crisitem.project.grantno
0000000000
-
crisitem.project.grantno
MG2021-3, MG2023-5
-
crisitem.author.dept
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
-
crisitem.author.dept
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
-
crisitem.author.dept
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
