Seminar: Resonance and Chaotic Features of Coupled Josephson Junctions

A cubical magnet levitating over a superconducting material. Image courtesy of Wikipedia, under Creative Commons license

A cubical magnet levitating over a superconducting material. Image courtesy of Wikipedia

Skoltech invites you to the next Solid State Physics seminar.

When: 19 November, Wednesday at 16:30

Where: Room Beijing-1, Moscow School of Management

What: Resonance and Chaotic Features of Coupled Josephson Junctions

Speaker: Prof. Yury Shukrinov (Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Russia).

Abstract:

Phenomenological model with capacitive coupling and diffusion current is proposed for the description of intrinsic Josephson junctions in high temperature superconductors (HTSC). Realization of parametric resonance in coupled Josephson junctions (JJ) leading to charging of superconducting layers and longitudinal plasma wave is shown.

We generalize the McCumber and Stewart dependence for the return current to the case of coupled JJ.  It is demonstrated that correlation functions give a powerful method for analysis of current-voltage characteristics of coupled JJ.

Prof. Yury Shukrinov, Guest speaker at the Skoltech Solid State Physics seminar,. (Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Russia)

Prof. Yury Shukrinov, Guest speaker at the Skoltech Solid State Physics seminar,. (Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Russia)

We present experimental evidence of parametric resonance manifestation in the current-voltage characteristics of intrinsic JJ in HTSC. A

variation of the longitudinal plasma wavelength and the appearance of structured chaos under external electromagnetic radiation are predicted. We show manifestations of a new collective excitation composed of Josephson current, electric and magnetic field.

 

* The Skolkovo Institute of Science and Technology (Skoltech) is a private graduate research university in Skolkovo, Russia, a suburb of Moscow. Established in 2011 in collaboration with MIT, Skoltech educates global leaders in innovation, advances scientific knowledge, and fosters new technologies to address critical issues facing Russia and the world. Applying international research and educational models, the university integrates the best Russian scientific traditions with twenty-first century entrepreneurship and innovation.

 

 

If you like to participate and for further information or questions, please e-mail Alesya Garifullina: .
Please confirm your attendance. We look forward to seeing you.

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