Electron-phonon interaction in a local region

TL;DR

This study investigates electron-phonon interactions in a nanosized region, revealing bound states, resonant elastic scattering, and inelastic effects impacting dephasing and thermal resistance, with implications for nanostructure electronic properties.

Contribution

It introduces a modified Fröhlich Hamiltonian approach to analyze localized electron-phonon interactions and uncovers new scattering phenomena in nanoscale regions.

Findings

Bound state formation within nanosized regions

Resonant elastic scattering of electrons

Strong inelastic scattering affecting thermal resistance

Abstract

The paper reports on a study of electron-phonon interaction within a limited nanosized region. We invoked the modified Fr\"{o}hlich's Hamiltonian to calculate the electron self-energy, as well as the elastic and inelastic scattering cross sections. New effects have been revealed, more specifically: a bound state forms within the limited nanosized region, electrons undergo resonant elastic scattering, with strong inelastic scattering being possible from this state even at low electron energies. The effect of scattering on the magnetic-field-independent dephasing time, in particular, in a diamond-decorated carbon nanotube, has been determined. The effect of strong inelastic electron scattering on thermal resistance at the metal-insulator interface is discussed.