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25 papers
Spontaneous emission of light by non-equilibrium phonons
J. Plo, P. Valvin, M. Moret +8
When a system is brought out of equilibrium by an external excitation, its relaxation to thermodynamic equilibrium generates phonons. These non-equilibrium phonons degrade via casc…
Coupled dynamical Boltzmann transport equations with long-range electron-phonon and electron-electron interactions in 2D materials
Francesco Macheda, Thibault Sohier
We study the interplay between long-range electron-phonon and electron-electron interactions in electrostatically doped two-dimensional semiconductors, including interlayer couplin…
Electronic transport in BN-encasulated graphene limited by remote phonon scattering
Khalid Dinar, Francesco Macheda, Alberto Guandalini +6
We study the impact of BN's phonons on the electrical resistivity of hBN-encapsulated graphene. While encapsulation yields high-mobility devices, the surrounding BN itself introduc…
Unconventional gate-induced superconductivity in transition-metal dichalcogenides
Thibault Sohier, Marco Gibertini, Ivar Martin +1
Superconductivity in few-layer semiconducting transition metal dichalcogenides (TMDs) can be induced by field-effect doping through ionic-liquid gating. While several experimental…
Ab-initio Van der Waals electrodynamics: polaritons and electron scattering from plasmons and phonons in BN-capped graphene
Francesco Macheda, Francesco Mauri, Thibault Sohier
Plasmons and polar phonons are elementary electrodynamic excitations of matter. In 2d and at long wavelengths, they couple to light and act as the system polaritons. They also dict…
Density-functional perturbation theory for one-dimensional systems: implementation and relevance for phonons and electron-phonon interactions
Norma Rivano, Nicola Marzari, Thibault Sohier
The electronic and vibrational properties and electron-phonon couplings of one-dimensional materials will be key to many prospective applications in nanotechnology. Dimensionality…