A phonon is a collective excitation in a periodic, elastic arrangement of atoms or molecules in condensed matter, specifically in solids and some liquids. In the context of optically trapped objects, the quantized vibration mode can be defined as phonons as long as the modal wavelength of the oscillation is smaller than the size of the object.

2025年3月10日 · phonon, in condensed-matter physics, a unit of vibrational energy that arises from oscillating atoms within a crystal. Any solid crystal, such as ordinary table salt (sodium chloride), consists of atoms bound into a specific repeating …

According to the phonon definition, a phonon is a collective excitation in a periodic, elastic arrangement of atoms or molecules condensed specifically in solids and some liquids. In other words, a phonon can be defined as a discrete unit of vibrational mechanical energy, the phonons exist with a discrete amount of energy given by E=ħ.

2024年11月19日 · Phonons are tiny packets of energy that come from the vibrations of atoms in a solid. In solids, atoms are arranged in a regular, repeating pattern called a lattice, where each atom vibrates around its fixed position. These vibrations or phonons travel through the solid in fixed, tiny amounts, carrying energy with them.

2010年7月8日 · Physicists call these basic levels of energy phonons. In a sense, then, “phonon” is just a fancy word for a particle of heat. Phonons are especially relevant in the behavior of heat and sound in crystals, explains Gang Chen, the Soderberg Professor of Power Engineering at …

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Phonons are vibrational modes of a crystal that form wave packets characterized by a frequency ω and momentum ℏk. In a solid, they can be created by increasing temperature or providing some mechanical stress. As a result, phonons are important quasi-particles in solids that contribute to heat conduction and sound propagation.

A phonon is a collective excitation in condensed matter, which is a quantization of the vibration mode in elastic structures. Although phonons are not as popular as photons or electrons, they are ubiquitous in our daily lives.

In materials, atoms can jiggle, oscillating back and forth about their equilibrium position. The result of their collective e↵ort is what we call sound waves or, at the quantum level, phonons. In this section we explore the physics of this jiggling. Much of the interesting physics can be illustrated by sticking to one-dimensional ex-amples.

The meaning of PHONON is a quantum of vibrational energy (as in a crystal).