Capacitively coupled Josephson-junction chains

Straight versus slanted coupling

Mahn-Soo Choi, M. Y. Choi, Sung Ik Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We investigate analytically the quantum phase transition in a system of two chains of ultrasmall Josephson junctions, coupled capacitively with each other. Two different schemes of the coupling, straight and slanted, between the two chains are considered. In both coupling schemes, as the coupling capacitance is increased, the transport of particle-hole pairs is found to drive a quantum phase transition of the Berezinskii-Kosterlitz-Thouless type from insulator to superconductor. A substantial discrepancy between the transition points in the two coupling schemes is observed, which reflects the difference between the transport mechanisms.

Original languageEnglish
Pages (from-to)943-957
Number of pages15
JournalJournal of Physics Condensed Matter
Volume12
Issue number6
DOIs
Publication statusPublished - 2000 Feb 14
Externally publishedYes

Fingerprint

Phase Transition
Josephson junctions
Phase transitions
Superconducting materials
Capacitance
transition points
capacitance
insulators
Superconductivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Capacitively coupled Josephson-junction chains : Straight versus slanted coupling. / Choi, Mahn-Soo; Choi, M. Y.; Lee, Sung Ik.

In: Journal of Physics Condensed Matter, Vol. 12, No. 6, 14.02.2000, p. 943-957.

Research output: Contribution to journalArticle

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