| Autor: |
Junginger, T., Calatroni, S., Sublet, A., Terenziani, G., Prokscha, T., Salman, Z., Proslier, T., Zasadzinski, J. |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
2017 Supercond. Sci. Technol. 30 125013 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1088/1361-6668/aa8926 |
| Popis: |
Point contact tunneling (PCT) and low energy muon spin rotation (LE-muSR) are used to probe, on the same samples, the surface superconducting properties of micrometer thick niobium films deposited onto copper substrates using different sputtereing techniques: diode, dc magnetron (dcMS) and HIPIMS. The combined results are compared to radio-frequency tests performances of RF cavities made with the same processes. Degraded surface superconducting properties are found to yield lower quality factors and stronger Q slope. In addition, both techniques find evidence for surface paramagnetism on all samples and particularly on Nb films prepared by HIPIMS. |
| Databáze: |
arXiv |
| Externí odkaz: |
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