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FLUCTUATIONS IN JOSEPHSON JUNCTIONS

A. I. Larkin, Андрей Варламов

Open publisher page 51 citations

Abstract

Abstract The chapter starts with a discussion of the general properties of a Josephson junction. Fluctuation broadening of the emission line due to both thermal fluctuations of the voltage and thermal fluctuations of the order parameter are then calculated. In the framework of the Ginzburg-Landau formalism, the fluctuation suppression of the Josephson current below Tc is found. Josephson current decay due to the thermal phase fluctuations and the phenomenon of macroscopic quantum tunneling are discussed. Different regimes of pair tunneling through the washboard potential are considered.

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What this paper is about

Abstract The chapter starts with a discussion of the general properties of a Josephson junction. Fluctuation broadening of the emission line due to both thermal fluctuations of the voltage and thermal fluctuations of the order parameter are then calculated. In the framework of the Ginzburg-Landau formalism, the fluctuation suppression of the Josephson current below Tc is found. Josephson current decay due to the thermal phase fluctuations and the phenomenon of macroscopic quantum tunneling are discussed. Different regimes of pair tunneling through the washboard potential are considered.

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Available abstract

Abstract The chapter starts with a discussion of the general properties of a Josephson junction. Fluctuation broadening of the emission line due to both thermal fluctuations of the voltage and thermal fluctuations of the order parameter are then calculated. In the framework of the Ginzburg-Landau formalism, the fluctuation suppression of the Josephson current below Tc is found. Josephson current decay due to the thermal phase fluctuations and the phenomenon of macroscopic quantum tunneling are discussed. Different regimes of pair tunneling through the washboard potential are considered.

Key concepts: Josephson effect, Quantum tunnelling, Condensed matter physics, Thermal fluctuations, Physics, Pi Josephson junction, Thermal, Quantum

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