Abstract
A theory for the Josephson effect in the ferromagnetic superconductors is presented. Taking account of critical fluctuations of the localized-spin magnetization, we calculate the magnetic field dependence of the maximum Josephson current and I-V characteristics. The Josephson current is reduced by a noise effect arising from the critical spin fluctuations at low temperatures. The anomalous behaviors observed in the dc Josephson effect in ErRh4B4-LuxOy-In junctions are interpreted on the basis of present theory.
| Original language | English |
|---|---|
| Pages (from-to) | 6463-6479 |
| Number of pages | 17 |
| Journal | Physical Review B |
| Volume | 30 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1984 Jan 1 |
ASJC Scopus subject areas
- Condensed Matter Physics
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Koyama, T., & Tachiki, M. (1984). Josephson effects in ferromagnetic superconductors: Noise effect due to critical spin fluctuations. Physical Review B, 30(11), 6463-6479. https://doi.org/10.1103/PhysRevB.30.6463