Bipolarons in the intermediate coupling method
P. Zh. BaimatovInstitute of Chemistry, Academy of Sciences of Uzbekistan, 700170, Tashkent, UzbekistanD. Ch. KhuzhakulovInstitute of Chemistry, Academy of Sciences of Uzbekistan, 700170, Tashkent, UzbekistanKh. T. SharipovInstitute of Chemistry, Academy of Sciences of Uzbekistan, 700170, Tashkent, Uzbekistan
ABI
Аннотация
The properties of polarons and bipolarons are studied by the intermediate coupling method, which takes electron-lattice coupling into account. A Coulomb correlation in the electron motion is included. When the Fröhlich coupling constant is reduced, at α*=5.7 a bipolaron decays suddenly from a self-trapped state into two delocalized polarons. A phase diagram is constructed for the region where the stable bipolaron exists. These results are compared with those obtained by integration along trajectories.
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