Polaron Mass and Electron-Phonon Correlations in the Holstein Model

Figure 2

Ratio of the Modified Lang-Firsov polaron mass to the bare band mass versus e-ph coupling in (a) 1D, (b) 2D, and (c) 3D. A set of twelve 𝑧𝑡/𝜔₀ values ranging from the antiadiabatic to the adiabatic regime is considered. From left to right: 𝑧𝑡/𝜔₀=0.25,0.5,0.75,1.0,1.25,1.5,1.75,2.0,2.25,2.5,2.75,3.0. 𝜔₀=100 meV. The diamonds mark the occurrence of the self-trapping event.

(a)

(b)

(c)