energy gap

British  

noun

1. physics the difference of energy between the bottom of the conduction band and the top of the valence band of the electrons in a crystalline solid. For values below about 2eV the substance is considered to be a semiconductor whilst for higher values it is considered to be an insulator

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Example Sentences

This pairing creates an energy gap near the Fermi level called the superconducting gap.

From Science Daily • Dec. 21, 2025

Recently, Young and colleagues measured the energy gap of the state where Majoranas are expected to form in their graphene, and found it to be about 10 times larger than Microsoft’s gap.

From Science Magazine • Dec. 20, 2023

This connection between the energy gap and magnetism has been challenging to observe in other materials and samples.

From Nature • Dec. 17, 2019

Secretary-General Kofi Annan recently told the Ghana News Agency that coal and other fossil fuels are critical at least in the short term to bridge the continent’s massive energy gap.

From Washington Times • Apr. 19, 2017

The last of its reactors were set to be decommissioned by 2037, leaving Hungary facing an energy gap that some hoped to fill with renewable sources such as solar and biomass.

From Washington Post • Feb. 16, 2015