Fig. 5: Comparison of generalized and standard Fröhlich model for ZPR (top) and α (bottom), from perturbation theory, for both valence and conduction band edges. | npj Computational Materials

Fig. 5: Comparison of generalized and standard Fröhlich model for ZPR (top) and α (bottom), from perturbation theory, for both valence and conduction band edges.

From: High-throughput analysis of Fröhlich-type polaron models

Fig. 5

The insets show the dispersion for the full range of values of ZPR and α. The standard ZPR is usually slightly larger than the generalized Fröhlich model (at most by a factor of 2), and the αsFr is slightly smaller than αgFr, with a wider spread (up to a factor of 3 or more) and fewer exceptions where αgFr < αsFr. This shows that different factors influence the ZPR and α, in particular the frequency which switches between the numerator and denominator.

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