Unified theory for magnetic and electric field coupling in multistacked Josephson junctions

Masahiko Machida; Shigeki Sakai

doi:10.1103/PhysRevB.70.144520

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Unified theory for magnetic and electric field coupling in multistacked Josephson junctions

Masahiko Machida, Shigeki Sakai

DOI 10.1103/PhysRevB.70.144520 · Physical Review B

T1

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Abstract

We develop a theoretical framework for multistacked Josephson junctions. The electric field coupling is newly formulated by a semimiscroscopic treatment for the electric field penetration into the superconducting layer, and a unified equation containing both the magnetic and the electric field coupling is derived. From the equation, we obtain analytical frequency dispersions for collective plasma waves as a function of the in-plane wave number, and we find two unique features in the dispersions, i.e., the electric field coupling hardens the Josephson plasma with a decrease in the superconducting layer thickness and causes the dispersion curves to cross at small in-plane wave number regimes. The latter one means that mode conversions between different plasma waves occur.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown