1998/02/06 by M. A. Smondyrev, Smondyrev, M. A., A. A. Shanenko +3
Materials Science · Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #Thermal properties of materials #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9802071
13 pages, ReVTeX, including 4 postscript figures, submitted to Phys. Rev. B
arxiv created 1998/02/06 · openalex publication_date 1998/02/06 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A criterion, proposed by the present authors, is used to derive numerical results for the stability of a large bipolaron embedded in a polaron gas. The main conclusion is that an isolated metastable bipolaron can be stabilized by the polaron gas surroundings because of the Fermi statistics of polarons. On the other hand, it is found that the exchange interaction tends to destabilize the bipolaron. The study is performed both for bulk (3D) materials and for thin (2D) films within the Hartree-Fock approximation. The bipolaron is described by an extension of the Feynman