Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α-Quartz.
Sign Up to like & getrecommendations! Published in 2025 at "Advanced materials"
DOI: 10.1002/adma.202511289
Abstract: While the linear motion of phonons is widely understood as arising from the translational symmetry of crystal lattices, recent studies have revealed the intrinsic rotational motion of phonons in condensed matter with discrete rotational symmetry.… read more here.
Keywords: phonon; pseudoangular momentum; conservation pseudoangular; chiral acoustic ... See more keywords
Effects of Boron Doping on the Bulk and Surface Acoustic Phonons in Single-Crystal Diamond.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c10879
Abstract: We report the results of the investigation of bulk and surface acoustic phonons in the undoped and boron-doped single-crystal diamond films using the Brillouin-Mandelstam light scattering spectroscopy. The evolution of the optical phonons in the… read more here.
Keywords: bulk surface; spectroscopy; boron doping; acoustic phonons ... See more keywords
Cross-plane coherent acoustic phonons in two-dimensional organic-inorganic hybrid perovskites
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-04429-9
Abstract: Two-dimensional Ruddlesden–Popper organic–inorganic hybrid layered perovskites (2D RPs) are solution-grown semiconductors with prospective applications in next-generation optoelectronics. The heat-carrying, low-energy acoustic phonons, which are important for heat management of 2D RP-based devices, have remained unexplored.… read more here.
Keywords: cross plane; acoustic phonons; organic inorganic; dimensional organic ... See more keywords
Excitation and detection of acoustic phonons in nanoscale systems.
Sign Up to like & getrecommendations! Published in 2022 at "Nanoscale"
DOI: 10.1039/d2nr04100f
Abstract: Phonons play a key role in the physical properties of materials, and have long been a topic of study in physics. While the effects of phonons had historically been considered to be a hindrance, modern… read more here.
Keywords: acoustic phonons; excitation detection; phonons nanoscale; detection acoustic ... See more keywords
Theory of the shear acoustic phonons spectrum and their interaction with electrons due to the piezoelectric potential in AlN/GaN nanostructures of plane symmetry
Sign Up to like & getrecommendations! Published in 2021 at "Low Temperature Physics"
DOI: 10.1063/10.0003176
Abstract: Using the models of elastic and dielectric continuum, the system of differential equations is obtained, the exact analytical solutions of which describe the elastic displacement of the medium for nitride-based semiconductor nanostructure and the piezoelectric… read more here.
Keywords: acoustic phonons; piezoelectric potential; phonons spectrum; shear acoustic ... See more keywords
Phase control of coherent acoustic phonons in gold bipyramids for optical memory and manipulating plasmon–exciton coupling
Sign Up to like & getrecommendations! Published in 2020 at "Applied Physics Letters"
DOI: 10.1063/5.0004209
Abstract: Recent efforts have targeted manipulation of nanomaterial vibrational modes in applications such as chemical/mass sensing, optical switching, and phonon-driven photochemistry. While impulsive photoexcitation can generate coherent phonons, multiple excitation pulses offer the prospect of control… read more here.
Keywords: plasmon exciton; acoustic phonons; optical memory; gold bipyramids ... See more keywords
Anisotropic attenuation of GHz-frequency acoustic phonons and the Grüneisen tensor in MgO crystal
Sign Up to like & getrecommendations! Published in 2024 at "Applied Physics Letters"
DOI: 10.1063/5.0189944
Abstract: We report on measurements of the anisotropy of velocities and attenuation of GHz-frequency acoustic phonons in a cubic MgO crystal at room temperature. They are used to quantify the strong anisotropy of the Grüneisen parameter… read more here.
Keywords: attenuation ghz; ghz frequency; mgo crystal; acoustic phonons ... See more keywords
Generation and coherent control of terahertz acoustic phonons in superlattices of perovskite oxides
Sign Up to like & getrecommendations! Published in 2021 at "New Journal of Physics"
DOI: 10.1088/1367-2630/abf86e
Abstract: We utilized transmission-type pump–probe technique to investigate coherent acoustic phonons in the superlattices of perovskite oxides such as SrIrO3/SrTiO3 and SrRuO3/SrTiO3. Because the films in the superlattices are of high-quality and their thicknesses are only… read more here.
Keywords: superlattices perovskite; acoustic phonons; coherent; coherent acoustic ... See more keywords
Piezoelectric Response to Coherent Longitudinal and Transverse Acoustic Phonons in a Semiconductor Schottky Diode
Sign Up to like & getrecommendations! Published in 2017 at "Physical review applied"
DOI: 10.1103/physrevapplied.7.024014
Abstract: We study the generation of microwave electronic signals by pumping a (311) GaAs Schottky diode with compressive and shear acoustic phonons, generated by femtosecond optical excitation of an Al _lm transducer and mode conversion at… read more here.
Keywords: response coherent; schottky diode; acoustic phonons; schottky ... See more keywords
Dynamic Spin-Lattice Coupling and Nematic Fluctuations in NaFeAs
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review X"
DOI: 10.1103/physrevx.8.021056
Abstract: We use inelastic neutron scattering to study acoustic phonons and spin excitations in single crystals of NaFeAs, a parent compound of iron pnictide superconductors. NaFeAs exhibits a tetragonal-to-orthorhombic structural transition at $T_s\approx 58$ K and… read more here.
Keywords: lattice coupling; coupling nematic; acoustic phonons; spin lattice ... See more keywords
Terahertz radiation from propagating acoustic phonons based on deformation potential coupling.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.460471
Abstract: We report on new THz electromagnetic emission mechanism from deformational coupling of acoustic (AC) phonons with electrons in the propagation medium of non-polar Si. The epicenters of the AC phonon pulses are the surface and… read more here.
Keywords: radiation propagating; deformation; propagating acoustic; terahertz radiation ... See more keywords