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Seminars & Lectures

* TITLE

New Features in Collective Dynamics of Intrinsic Josephson Junctions

* SPEAKERS

Name	Affiliation	E-mail
Yury M. Shukrinov	BLTP, JINR / Russia	hjlee(at)apctp.org

* HOST(Applicant)

Name	Affiliation	E-mail
-

* DATE / TIME

2007-08-29, 3:00 - 4:00 p.m.

* PLACE

APCTP Headquarters, Pohang, Korea

* ABSTRACT

We generalized the McCumber-Steward dependence of the return current for
the case of intrinsic Josephson junctions in the high temperature
supercondoctor. We investigated the breakpoint current on the
outermost branch as a function of the coupling and dissipation parameters
for the stacks with a different number of junctions and demonstrate a
plateau with breakpoint current oscillation. Based on the idea of the
parametric resonance in the stack of intrinsic Josephson junctions, a
modeling of the coupling and dissipation dependence of the breakpoint
current has been done, and good qualitative agreement with the results of
simulation has been obtained. We demonstrated the commensurability effect
and predicted a group behavior of the current-voltage characteristics for
the stacks with different number of junctions. We show that the coupling
and dissipation dependence of the breakpoint current is an instrument to
determine the mode of longitudinal plasma waves created at the breakpoint
in the stacks with a different number of junctions.

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