energy band

American  

[en-er-jee band] / ˈɛn ər dʒi ˌbænd /

noun

1. Physics. a group of energy levels that exist in a solid, in which electrons behave according to whichever level they occupy. See conduction band; valence band.

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energy band British  

noun

1. physics a range of energies associated with the quantum states of electrons in a crystalline solid. In a semiconductor or an insulator there is a valence band containing many states, most of which are occupied. Above this is a forbidden band with only a few isolated states caused by impurities. Above this is a conduction band containing many states most of which are empty. In a metal there is a continuous valence-conduction band See also energy gap

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Example Sentences

Both graphene and BLG are semimetals, as they lack the characteristic energy band gap found in semiconductors and, most notably, insulators.

From Science Daily • Jan. 17, 2024

These are positions where two energy bands take on the same value, meaning that at these points electrons can easily jump from one energy band to another.

From Scientific American • Jun. 18, 2023

Visualizing a material's energy band structure can immediately reveal something about that material's properties.

From Scientific American • Jun. 18, 2023

The experiment, though powerful enough to dominate its energy band in years to come, suffers from relatively low angular resolution and sky coverage, and it lacks the ability of instantaneous detection.

From Scientific American • Jul. 8, 2021

In the 0.5–8.0 keV energy band, we measured 12 total counts in our first epoch and 17 total counts in the second epoch.

From Nature • Oct. 15, 2017