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

Fabrizio Cossu | Zendy; C. Schuster | Zendy; Udo Schwingenschlögl | Zendy

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

Author(s) -

Fabrizio Cossu,

C. Schuster,

Udo Schwingenschlögl

Publication year - 2012

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4769741

Subject(s) - positron , hubbard model , electron , physics , electron pair , eigenvalues and eigenvectors , atomic physics , molecule , condensed matter physics , quantum mechanics , superconductivity

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

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