Table 2 Mass renormalization and the electron-phonon interaction (EPI) strength.

From: Ferroelectricity modulates polaronic coupling at multiferroic interfaces

  

LSMO

LSMO|PZT

hole bands

meff/me

3.74 ± 0.42

1.69 ± 0.36

 

α2D

3.38

1.05

electron band

meff/me

2.50 ± 0.81

1.30 ± 0.4

 

α3D

4.07

1.5

  1. Electron and hole effective masses (meff) at La0.7Sr0.3MnO3 (LSMO) surface and at the PbZr0.2Ti0.8O3 interface, PZT|LSMO deduced with Eq.(2) from the Fermi velocities obtained in turn by a linear fit of the band dispersions in the kink region. The dimensionless coupling constant α2D,3D, estimates the EPI strength for the two-dimensional (2D) hole and three-dimensional (3D) electron Frohlich polarons. The errors express the standard deviation and are obtained from the individual linear fit of each kink region.
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