Refine your search�ソスF     
Report No.

Electrodynamics and intrinsic Josephson effects in multi-gap superconductors

Koyama, Tomio*; Ota, Yukihiro; Machida, Masahiko  

We develop a theory for the Josephson effects in 2-gap intrinsic Josephson junctions stacks (IJJs). The coupled dynamical equations for the phase differences are derived from the low-energy effective Lagrangian. The equations describe the longitudinal Josephson plasma and the Josephson-Leggett (JL) mode propagating in the direction perpendicular to the junctions. Numerical results for the $$I$$-$$V$$ characteristics are presented. The $$I$$-$$V$$ characteristics shows multiple-branch structures similar to that in Bi-2212 IJJ's. When the Josephson frequency is approached to the JL mode frequency in non-uniform voltage branches, the JL mode is resonantly exited. At the resonant voltage a step-like structure appears in the $$I$$-$$V$$ curves in low-voltage branches.



- Accesses






[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.