Quantum glass transition in a periodic long-range Josephson array

D. M. Kagan, M. V. Feigel'Man, L. B. Ioffe

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We show that the ground state of a periodic long-range Josephson array frustrated by a magnetic field is a glass for sufficiently large Josephson energies despite the absence of quenched disorder. Like superconductors, this glass state has non-zero phase stiffness and Meissner response; for lower Josephson energies the glass "melts" and the ground state loses its phase stiffness and becomes insulating. We find the critical scaling behavior near this quantum phase transition: the excitation gap vanishes as (J - Jc)2, and the frequency-dependent magnetic susceptibility behaves as χ(ω))∝ √ω ln ω.

Original languageEnglish
Pages (from-to)781-787
Number of pages7
JournalJournal of Experimental and Theoretical Physics
Issue number4
Publication statusPublished - 1999
Externally publishedYes


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