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Theory of coherent phonons coupled to excitons
The interaction of excitons with lattice vibrations underlies the scattering from bright to dark excitons as well as the coherent modulation of the...
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Infrared-active phonons in one-dimensional materials and their spectroscopic signatures
Dimensionality provides a clear fingerprint on the dispersion of infrared-active, polar-optical phonons. For these phonons, the local dipoles...
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On the Generation of Phonons and Electronic Excitations by a Channeled Particle in Crystals
AbstractThe processes of generating phonons and electronic excitations by an oriented quantum particle in a crystal are considered. The probabilities...
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Generation of Coherent Acoustic Phonons in Nitride-Based Semiconductor Nanostructures
In this chapter, we review experimental and theoretical aspects of coherent acoustic phonon generation in nitride-based semiconductor...
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Dynamic Properties and Focusing of Phonons in Metallic and Dielectric Crystals of Cubic Symmetry. Review 1
AbstractThe spectrum and polarization vectors of phonons in alkali and noble metals belonging to cubic crystals with positive anisotropy of elastic...
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Pressure tuning of minibands in MoS2/WSe2 heterostructures revealed by moiré phonons
Moiré superlattices of two-dimensional heterostructures arose as a new platform to investigate emergent behaviour in quantum solids with...
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Study of zone center phonons in double-perovskite oxides Ba2CdTeO6
A short-range force constant model has been applied to study the Raman and infrared phonons in the tetragonal structure of double-perovskite Ba 2 CdTeO 6 ...
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Thermal transport mechanism of electrons and phonons in pristine and defective HfB2
Hafnium diboride (HfB 2 ) is an important metallic ceramic that works in harsh environments, due to its high strength and thermal conductivity....
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Degenerate topological line surface phonons in quasi-1D double helix crystal SnIP
Degenerate points/lines in the band structures of crystals have become a staple of the growing number of topological materials. The bulk-boundary...
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Full-landscape selection rules of electrons and phonons and temperature-induced effects in 2D silicon and germanium allotropes
The electron-phonon (el-ph) and phonon-phonon interactions play crucial roles in determining the electronic and thermal transport properties of...
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Ultrafast control of magnetic interactions via light-driven phonons
Resonant ultrafast excitation of infrared-active phonons is a powerful technique with which to control the electronic properties of materials that...
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An experimental and theoretical approach for temperature-dependent Raman-active optical phonons driven thermal conductivity of layered PbBi2Se4 nano-flowers
Topologically active, crystalline layered PbBi 2 Se 4 has been probed for significantly low thermal conductivity and excellent thermal properties. The...
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Effect of interface phonons on the functioning of quantum cascade detectors operating in the far infrared range
The spectral characteristics of a cascade of broadband quantum cascade detector, functioning in the far IR range, renormalized by the interaction...
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Symmetry-enforced Weyl phonons
In spinful electronic systems, time-reversal symmetry makes that all Kramers pairs at the time-reversal-invariant momenta are Weyl points (WPs) in...
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Robust and tunable Weyl phases by coherent infrared phonons in ZrTe5
Ultrafast control of structural and electronic properties of various quantum materials has recently sparked great interest. In particular,...
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Effect of short-ranged spatial correlations on the Anderson localization of phonons in mass-disordered systems
We investigate the effect of spatially correlated disorder on the Anderson transition of phonons in three dimensions using a Green’s function-based...
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Observation of Backfolded Acoustic Phonons in Metal-Oxide Heterostructures
Among thin films, superlattices are of particular scientific and technological importance. Their periodicity presents an additional control...