Novel applications of electron-phonon coupling
Image: Coupling of lattice vibrations to electronic states of defects influences in radiative and nonradiative transitions. First principles calculations can predict the rates for such transitions.
The coupling between the electrons and the lattice in materials plays a key role in may physical processes/properties such as the dependence of the band structure on temperature, phonon-mediated indirect absorption, BCS superconductivity, and electron transport. We are interested in exploring electron-phonon coupling in the some novel contexts, such as how it mediates nonradiative transitions at defects and how gradient perturbations can be treated as the response to long-wavelength phonons.
Cyrus E. Dreyer, Massimiliano Stengel, David Vanderbilt,
Current-density implementation for calculating flexoelectric coefficients,
Phys. Rev. B 98, 075153 (2018), Editor’s Suggestion, arXiv:1802.06390
David Vanderbilt, Rutgers University
Karin M. Rabe, Rutgers University
Massimiliano Stengel, ICREA and ICMAB-CSIC
Bartomeu Monserrat Cambridge University