BLF-SSH polarons coupled to acoustic phonons in the adiabatic limit

Article

关键词: SU-SCHRIEFFER-HEEGER;    HOLSTEIN POLARON;    TIGHT-BINDING;    MODEL;    TRANSITION;    POLYACETYLENE;    APPROXIMATION;    DIMENSIONS;   

DOI  :  10.1103/PhysRevB.90.245149

来源: SCIE

【 摘 要 】

We survey polaron formation in the Barisic-Labbe-Friedel and Su-Schrieffer-Heeger (BLF-SSH) model using acoustic phonons in the adiabatic limit. Multiple different numerical optimization routines and strong-coupling analytical calculations are used to find a robust ground-state energy for a wide range of coupling strengths. The electronic configuration and accompanying ionic distortions of the polaron were determined, as well as a nonzero critical coupling strength for polaron formation in two and three dimensions.

【 授权许可】

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