Small-bipolaron formation

Morrel H. Cohen, E. N. Economou, Costas M. Soukoulis

Research output: Contribution to journalArticlepeer-review

51 Scopus citations


Using the scaling arguments of Emin and Holstein, we examine the formation of small bipolarons by coupling of electrons to acoustic phonons. We find that for sufficiently small Coulomb interactions, the bipolaron forms at lower electron-phonon coupling constant than the polaron and is of lower energy than two polarons when these become stable. For larger Coulomb interactions, there can be a range of for which only the polaron is stable, and above that a range for which the bipolaron is the lower-energy form.

Original languageEnglish (US)
Pages (from-to)4496-4499
Number of pages4
JournalPhysical Review B
Issue number8
StatePublished - 1984
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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