Abstract
In the limit of strong electron-phonon coupling, we provide a unified insight into the stability criterion for bipolaron formation in low-dimensionally confined media. The model that we use consists of a pair of electrons immersed in a reservoir of bulk LO phonons and confined within an anisotropic parabolic potential box, whose barrier slopes can be tuned arbitrarily from zero to infinity. Thus, encompassing the bulk and all low-dimensional geometric configurations of general interest, we obtain an explicit tracking of the critical ratio ηc of dielectric constants below which bipolarons can exist.
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Received 15 September 1999 and Received in final form 20 March 2000
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Senger, R., Erçelebi, A. Stability of low-dimensionally-confined bipolarons. Eur. Phys. J. B 16, 439–446 (2000). https://doi.org/10.1007/s100510070201
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DOI: https://doi.org/10.1007/s100510070201