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arXiv · 0801.3229

Static and dynamic properties of 0, pi, and 0-pi ferromagnetic tunnel Josephson Junctions

J. Pfeiffer·M. Kemmler·D. Koelle·R. Kleiner·E. Goldobin·M. Weides·A. K. Feofanov·J. Lisenfeld·A. V. Ustinov
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Abstract

We present experimental studies of static and dynamic properties of 0, pi and 0-pi 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-pi Josephson junction is demonstrated by measuring the critical current as a function of two components (B_x, B_y) of an in-plane magnetic field. The experimental observation of a half-integer zero field step in 0-pi SIFS junctions is presented.

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J. Pfeiffer, M. Kemmler, D. Koelle, R. Kleiner, E. Goldobin, M. Weides, A. K. Feofanov, J. Lisenfeld, A. V. Ustinov. 2008-01-21. Static and dynamic properties of 0, pi, and 0-pi ferromagnetic tunnel Josephson Junctions. https://doi.org/10.1103/physrevb.77.214506

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