Acoustic phonons
Hamiltonian of Acoustic Phonons in Inhomogeneous Solids
... of acoustic phonons in inhomogeneous ...by acoustic frequencies and found the Hamiltonian of such system in the second ...the acoustic phonons quantum states can be discussed on basis ...
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Coherent acoustic phonons in van der Waals nanolayers and heterostructures
... coherent phonons from the temporal evolution of an arbitrary pump-probe ...coherent acoustic phonons and can be revealed more clearly by subtracting to the signal a slow decay background, as fitted ...
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Piezoelectric response to coherent longitudinal and transverse acoustic phonons in a semiconductor Schottky diode
... We study the generation of microwave electronic signals by pumping a (311) GaAs Schottky diode with compressive and shear acoustic phonons, generated by the femtosecond optical excitation of an Al film ...
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Rabi oscillations of a quantum dot exciton coupled to acoustic phonons : coherence and population readout
... to acoustic phonons strongly influences the four-wave mixing dynamics on the picosecond time scale, because it leads to transitions between the dressed ...
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Controlling competing orders via nonequilibrium acoustic phonons: Emergence of anisotropic effective electronic temperature
... optical phonons, as they can cause significant changes in the electronic structure and interactions on short time ...of acoustic phonons, which, due to their low excitation energies, generally lead ...
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Influence of Confined Acoustic Phonons on the Nonlinear Acousto-electric Effect in Doped Semiconductor Superlattices
... unconfined phonons interaction while recent works show the vital contribution of phonons confinement in these kinetic properties ...confined acoustic phonons on the nonlinear acousto-electric ...
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Hypersound Absorption of Acoustic Phonons in a Degenerate Carbon Nanotube
... of acoustic phonons in a degenerate Carbon Nanotube (CNT) was deduced theoretically and graphically as ...the acoustic waves were considered to be a flow of monochromatic phonons in the short ...
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TO STUDY THE THERMOELECTRIC PROPERTIES OF LOW DIMENSIONAL STRUCTURES
... finite acoustic mismatch between structure and barrier materials in low-dimensional structures leads to the acoustic phonon confinement, which in its turn brings about a corresponding decrease of the phonon ...
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THEORY OF SPIN-LATTICE RELAXATION OF COPPER IN A TUTTON SALT CRYSTAL
... The isotropy assumption means that the acoustic phonons (which are almost exclusively responsible for relaxation at low temperatures) can be described in terms of one longitudinal a[r] ...
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Raman scattering of InAs/AlAs quantum dot superlattices grown on (001) and (311)B GaAs surfaces
... by acoustic and optical phonons in InAs/AlAs quantum dot superlattices grown on (001) and (311)B GaAs ...longitudinal acoustic phonons up to the fifth order were observed in the Raman spectra ...
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Effect of detuning on the phonon induced dephasing of optically driven InGaAs/GaAs quantum dots
... longitudinal acoustic phonons as the principal source of intensity damp- ing of the ground-state (s-shell) transition of an InAs/GaAs self-assembled ...
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Online Full Text
... g is the two-dimensional density of states. In the last equation, two approximations are removed i.e. both longitudinal and transverse modes of the acoustic phonons are considered and an anisotropic, ...
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Influence of Confined Phonons on the Hall Coefficient in a Cylindrical Quantum Wire with an Infinite Potential (for Electron–acoustic Optical Phonon Scattering)
... confined acoustic phonons on the Hall coefficient (HC) in a cylindrical quantum wire (CQW) with an infinite potential (for electron – confined acoustic phonons ...
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PHONON COUPLING AND PHOTOIONIZATION CROSS-SECTIONS IN SEMICONDUCTORS
... Coupling to acoustic phonons shows at threshold and is especially significant for piezoelectric coupling, where 1 Ti has a peak related to the screening... Phonon coupling [r] ...
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A Bioparticle Separator based on Dielectrophoretic Integrated with Acoustic Force: Design and Simulation
... surface acoustic waves in comparison with bulk acoustic waves has some ...Surface acoustic waves generating in the piezoelectric ...with acoustic force results stronger system to trap more ...
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A theoretical model of an ultrasonic transducer incorporating spherical resonators
... Ultrasound is employed in a variety of technological applications which include penetration of a medium and analysis of the reflected wave (medical imaging and non-destructive evaluation) and focused energy supply ...
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Picosecond control of quantum dot laser emission by coherent phonons
... broadband acoustic pulse containing coherent phonons up to THz frequencies passes through the gain medium and changes dynamically the transition energies, resulting in a strongly modified coupling to the ...
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One Dimensional Physics of Interacting Electrons and Phonons in Carbon Nanotubes
... Preferential e-ph coupling and coherent phonon generation was first reported in Ruby in 1961 [116], and was followed by other reports describing the phenomenon in GaAs and other semiconductor crystals [117–119]. More ...
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Complementarity reveals bound entanglement of two twisted phonons
... Then we use experimentally photons that are entangled in their orbital angular momentum degrees of freedom to simulate a bound entangled bipartite state, on which we then apply the maxim[r] ...
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Acoustical Phonons Transport through a Stepped Quantum Wire
... Initiated by Feuchtwang in the sixties then revisited by Szeftel and al. in the eighties, the matching method returns account in a satisfactory way for the phonons dispersion curves [7] and for surface resonances. ...
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