Abstract
A basic feature of superconductors is flux quantization, which leads to periodicity of superconducting parameters with magnetic field. This periodicity is crucial for understanding basic concepts, such as elementary charge, symmetry of the order parameter, etc. In quantum circuit applications the periodicity is utilized for maximizing design performance. These applications rely on the fact that the periodicity is well defined for a given superconducting structure. We use scanning SQUID imaging and numerical simulations to show that, in realistic nanoscale devices, the periodicity depends on the temperature and the actual geometric details of the structure, specifically, the width of the wires that define the superconducting network. This should be taken into account in any experiment or application based on complex superconducting structures.
| Original language | English |
|---|---|
| Article number | 214514 |
| Journal | Physical Review B |
| Volume | 110 |
| Issue number | 21 |
| DOIs | |
| State | Published - Dec 1 2024 |
Bibliographical note
Publisher Copyright:© 2024 American Physical Society.
Funding
We thank S. Gur for the help in data analysis. X.W. and B.K. were supported by the European Research Council Grant No. ERC-2019- OG-866236, the Israeli Science Foundation Grant No. ISF-228/22, DIP 3970/1-1, and COST Action CA21144. A.F. and I.V. acknowledge support form the Israel Science Foundation (ISF) Grant No. 1499/21. E.S. acknowledges support of the Israel Science Foundation (ISF) Grant No. 993/19. J.A. is grateful to the University of Kentucky Center for Computational Sciences and Information Technology Services Research Computing for the use of the Morgan Compute Cluster. H.A.F. acknowledges the support of the NSF through Grant No. DMR1914451. E.S., H.A.F., and G.M. thank the Aspen Center for Physics (NSF Grant No. 1066293) for its hospitality, and financial support by the U.S.-Israel Binational Science Foundation through Award No. 2016130.
| Funders | Funder number |
|---|---|
| Kentucky Transportation Center, University of Kentucky | |
| US-Israel Binational Science Foundation | 1499/21, ISF-228/22, DIP 3970/1-1, 993/19 |
| US-Israel Binational Science Foundation | |
| European Cooperation in Science and Technology (COST) | CA21144 |
| European Cooperation in Science and Technology (COST) | |
| H2020 European Research Council | ERC-2019- OG-866236 |
| H2020 European Research Council | |
| United States-Israel Binational Science Foundation | 2016130 |
| United States-Israel Binational Science Foundation | |
| Aspen Center for Physics | 1066293 |
| Aspen Center for Physics | |
| U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China | DMR1914451 |
| U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics