A phonon is a collective excitation in a periodic, elastic arrangement of atoms or molecules in condensed matter, specifically in solids and some liquids...
47 KB (6,793 words) - 16:58, 20 August 2024
physics, a phonon polariton is a type of quasiparticle that can form in a diatomic ionic crystal due to coupling of transverse optical phonons and photons...
18 KB (2,527 words) - 13:33, 3 June 2024
Phonons can scatter through several mechanisms as they travel through the material. These scattering mechanisms are: Umklapp phonon-phonon scattering,...
8 KB (1,131 words) - 01:57, 11 July 2022
Phonon noise, also known as thermal fluctuation noise, arises from the random exchange of energy between a thermal mass and its surrounding environment...
4 KB (543 words) - 22:37, 6 August 2022
Phonon drag is an increase in the effective mass of conduction electrons or valence holes due to interactions with the crystal lattice in which the electron...
2 KB (269 words) - 10:31, 29 December 2022
The zero-phonon line and the phonon sideband jointly constitute the line shape of individual light absorbing and emitting molecules (chromophores) embedded...
9 KB (1,163 words) - 15:29, 28 March 2022
spectrum of other phonons, which is known as the phonon decay. The two most important anharmonic effects are the thermal expansion and the phonon thermal conductivity...
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Sound amplification by stimulated emission of radiation (redirect from Phonon laser)
amplification based on stimulated emission of phonons. Sound (or lattice vibration) can be described by a phonon just as light can be considered as photons...
55 KB (7,513 words) - 22:58, 18 March 2024
In solid state physics, a surface phonon is the quantum of a lattice vibration mode associated with a solid surface. Similar to the ordinary lattice vibrations...
12 KB (1,824 words) - 22:41, 7 December 2023
Phonon is the multimedia API provided by KDE and is the standard abstraction for handling multimedia streams within KDE software and also used by several...
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Heat transfer physics (section Phonon)
storage, transport, and energy transformation by principal energy carriers: phonons (lattice vibration waves), electrons, fluid particles, and photons. Heat...
67 KB (9,679 words) - 21:11, 23 July 2024
scattering or an anharmonic phonon-phonon (or electron-phonon) scattering process, reflecting an electronic state or creating a phonon with a momentum k-vector...
5 KB (557 words) - 10:08, 31 July 2023
Phonon is a cloud telephony company in Asia. It was founded in October 2006 by Samish Makhija and Ujwal Makhija, who are alumni of IIM Ahmedabad and IIM...
5 KB (337 words) - 17:22, 21 April 2024
Phonon 2555 Vision is a live video album by Susumu Hirasawa. It contains recordings of the Phonon 2555 shows from 2012, part of the "Phonon" series of...
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Phonovoltaic (section The phonon-phonon coupling)
A phonovoltaic (pV) cell converts vibrational (phonons) energy into a direct current much like the photovoltaic effect in a photovoltaic (PV) cell converts...
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more lattice phonons. In the low-temperature approximation, emission is from the zero-phonon level of the excited state to the zero-phonon level of the...
28 KB (3,565 words) - 15:54, 18 May 2024
phonon distribution multiplied by the energy of one phonon, times the group velocity of the phonons. The phonon distribution of a particular phonon mode...
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Carrier scattering (section Phonon scattering)
with complex phonon dispersions is using the Einstein model which states that only one phonon mode exists in solids. For optical phonons, this approximation...
18 KB (3,188 words) - 17:04, 1 August 2023
ratio of the natural frequency of longitudinal optic lattice vibrations (phonons) ( ω LO {\displaystyle \omega _{\text{LO}}} ) of an ionic crystal to the...
12 KB (1,446 words) - 23:59, 6 June 2024
electron holes. Other quasiparticles or collective excitations include the phonon, a quasiparticle derived from the vibrations of atoms in a solid, and the...
26 KB (3,211 words) - 01:21, 19 April 2024
light when it encounters acoustic phonons in a crystal, a process known as Brillouin scattering, to determine phonon energies and therefore interatomic...
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Electron mobility (section Lattice (phonon) scattering)
emitting a phonon is: m ∗ v emit 2 2 ≈ ℏ ω phonon (opt.) {\displaystyle {\frac {m^{*}v_{\text{emit}}^{2}}{2}}\approx \hbar \omega _{\text{phonon (opt.)}}}...
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electromagnetic and lattice vibrational waves known as phonon-polaritons, rather than currents or photons. Since phonon-polaritons propagate with frequencies in the...
14 KB (1,408 words) - 00:09, 8 November 2023
bandgap as well, for example AlSb. Interactions among electrons, holes, phonons, photons, and other particles are required to satisfy conservation of energy...
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long-lived phonon (a quantum of sound) with a matter excitation. It serves as a sound-based analogue of cavity quantum electrodynamics, where the phonon plays...
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equilibrium positions to effectively screen the charge of an electron, known as a phonon cloud. This lowers the electron mobility and increases the electron's effective...
48 KB (5,741 words) - 13:59, 12 February 2024
specific heat, and the phonon-spectrum. Interface roughness causes diffuse phonon scattering, which either increases or decreases the phonon reflectivity at...
116 KB (14,146 words) - 08:00, 7 August 2024
In conventional superconductors, this attraction is due to the electron–phonon interaction. The Cooper pair state is responsible for superconductivity...
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polaron (a fermionic quasiparticle), which is an electron plus an attached phonon cloud. Whenever the polariton picture is valid (i.e., when the weak coupling...
11 KB (1,204 words) - 20:43, 10 January 2024
electron-phonon system: the probabilities of electron's occurrence at any point of a space are similar. Both the electron density and the amplitudes of phonon...
2 KB (198 words) - 14:54, 13 October 2023