Velichko, A. V. and Porch, Adrian  ORCID: https://orcid.org/0000-0001-5293-8883
2001.
Phenomenological model of the non linear microwave response of a superconductor containing weak links.
Physical Review B
63
(9)
, 094512.
10.1103/PhysRevB.63.094512
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Abstract
A phenomenological model is proposed which describes the effect of both dc and rf magnetic fields H on the microwave surface impedance, Zs=Rs+jXs, of a superconductor containing weak links. Two types of the weak links are considered; a weak link between two grains, shunted by another grain, and a nonshunted weak link. In both cases, the dependences of Rs and Xs on applied H were found to be anomalous. Under certain conditions, the values of Zs(H) can fall below the zero-field values. Comparison with experiment is performed, and very good qualitative and (in some cases) quantitative agreement is found.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Subjects: | Q Science > QC Physics |
| Publisher: | American Physical Society |
| ISSN: | 0163-1829 |
| Last Modified: | 15 May 2023 20:26 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/8428 |
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