Static and dynamic properties of 0, π, and 0−π ferromagnetic Josephson tunnel junctions
J. Pfeiffer, M. Kemmler, D. Koelle, R. Kleiner, E. Goldobin, M. Weides, A. K. Feofanov, J. Lisenfeld, A. V. Ustinov
DOI 10.1103/PhysRevB.77.214506 · Physical Review B
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Abstract
We present experimental studies of static and dynamic properties of 0, π, and 0−π superconductor-insulator-ferromagnet-superconductor (SIFS) Josephson junctions of small and intermediate length. In the underdamped limit, these junctions exhibit a rich dynamical behavior such as resonant steps on the current-voltage characteristics. Varying the experimental conditions, zero-field steps, Fiske steps, and Shapiro steps are observed with a high resolution. A strong signature of the 0−π Josephson junction is demonstrated by measuring the critical current as a function of two components (Bx and By) of an in-plane magnetic field. The experimental observation of a half-integer zero-field step in 0−π SIFS junctions is presented.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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