Thermodynamics and I-V characteristics of resistance-shunted Josephson junctions

Takeo Kato; Masatoshi Imada

doi:10.1016/S0921-4526(99)03033-1

Thermodynamics and I-V characteristics of resistance-shunted Josephson junctions

Takeo Kato^*, Masatoshi Imada

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Resistance-shunted Josephson junctions are studied theoretically based on a tight-binding model. In addition to the effective bandwidth 2ℏΔ_eff, this multi-level system genuinely has a novel crossover at lower energy KℏΔ_eff below which the density of states becomes strongly degenerate, where K is a dimensionless damping strength. The optical responses take nearly Lorentzian forms with a width of the order of KℏΔ. The non-linear I-V characteristics is also discussed.

Original language	English
Pages (from-to)	1820-1821
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	284-288
Issue number	PART II
DOIs	https://doi.org/10.1016/S0921-4526(99)03033-1
Publication status	Published - 2000 Jan 1
Externally published	Yes

Keywords

Coulomb blockade
Dissipation
Josephson junction
Superconductor-insulator transition

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(99)03033-1

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abstract = "Resistance-shunted Josephson junctions are studied theoretically based on a tight-binding model. In addition to the effective bandwidth 2ℏΔeff, this multi-level system genuinely has a novel crossover at lower energy KℏΔeff below which the density of states becomes strongly degenerate, where K is a dimensionless damping strength. The optical responses take nearly Lorentzian forms with a width of the order of KℏΔ. The non-linear I-V characteristics is also discussed.",

keywords = "Coulomb blockade, Dissipation, Josephson junction, Superconductor-insulator transition",

author = "Takeo Kato and Masatoshi Imada",

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AU - Imada, Masatoshi

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N2 - Resistance-shunted Josephson junctions are studied theoretically based on a tight-binding model. In addition to the effective bandwidth 2ℏΔeff, this multi-level system genuinely has a novel crossover at lower energy KℏΔeff below which the density of states becomes strongly degenerate, where K is a dimensionless damping strength. The optical responses take nearly Lorentzian forms with a width of the order of KℏΔ. The non-linear I-V characteristics is also discussed.

AB - Resistance-shunted Josephson junctions are studied theoretically based on a tight-binding model. In addition to the effective bandwidth 2ℏΔeff, this multi-level system genuinely has a novel crossover at lower energy KℏΔeff below which the density of states becomes strongly degenerate, where K is a dimensionless damping strength. The optical responses take nearly Lorentzian forms with a width of the order of KℏΔ. The non-linear I-V characteristics is also discussed.

KW - Coulomb blockade

KW - Dissipation

KW - Josephson junction

KW - Superconductor-insulator transition

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - PART II

ER -

Thermodynamics and I-V characteristics of resistance-shunted Josephson junctions

Abstract

Keywords

ASJC Scopus subject areas

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