Multicritical phase diagram and random field effects in superconducting bismuthates

Amnon Aharony*, Assa Auerbach

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


The temperature-concentration phase diagram of doped bismuthate superconductors is described using a coarse grained anisotropic Heisenberg model. In contrast to previous treatments, we find a robust region of coexistence between the charge density wave (CDW) and the superconducting phases. Random fields break the CDW phase into metastable domains, which may explain various recent experiments. A partial Meissner effect without bulk superconductivity is predicted at low doping concentrations and at low temperatures.

Original languageEnglish
Pages (from-to)1874-1877
Number of pages4
JournalPhysical Review Letters
Issue number12
StatePublished - 1993


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