Quantum phase transitions in capacitively coupled two-dimensional Josephson-junction arrays

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Quantum phase transitions in two layers of ultrasmall Josephson junctions, coupled capacitively with each other, are investigated. As the inter-layer capacitance is increased, the system at zero temperature is found to exhibit an insulator-to-superconductor transition. It is shown that, unlike in the case for one-dimensional arrays with a similar coupling configuration, the transition cannot be accounted for exclusively by particle-hole pairs.

Original languageEnglish
Pages (from-to)9783-9789
Number of pages7
JournalJournal of Physics Condensed Matter
Issue number43
Publication statusPublished - 1998 Nov 2
Externally publishedYes


ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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