Two-site Hubbard molecule with a spinless electron-positron pair

Fabrizio Cossu, Cosima Schuster, Udo Schwingenschlögl

Research output: Contribution to journalArticlepeer-review


We determine the eigenvalues of the two-site Hubbard molecule with one electron and one positron to describe the characteristics of electron-positron interactions in solids. While the effect of hopping is, in general, opposite to the effect of on-site interaction, we find a complex scenario for the electron-positron pair with a non-vanishing potential drop. We give analytical solutions and discuss the combined effects of the model parameters.
Original languageEnglish (US)
Pages (from-to)123706
JournalJournal of Applied Physics
Issue number12
StatePublished - Dec 20 2012

ASJC Scopus subject areas

  • General Physics and Astronomy


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