Ground states of a frustrated kagomé array of Josephson junctions

Mohammad R. Kolahchi, Joseph P. Straley

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We study the ground state vortex lattices of a kagomé array of Josephson junctions in an external magnetic field. We give a simple model that accounts for the principal dependence of ground state energy on the density of vortices, and exhibit the exact ground state configurations for a sequence of special values. A Monte Carlo simulated annealing shows that there is very little further structure. For the special case (formula presented) it is known that there is an infinite degeneracy. We give a numerical technique for evaluating the zero temperature entropy.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number14
StatePublished - 2002

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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