Semimetal

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Notion

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Science and technology

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What Wikipedia says

A semimetal is a material with a small energy overlap between the bottom of the conduction band and the top of the valence band, but they do not overlap in momentum space. According to electronic band theory, solids can be classified as insulators, semiconductors, semimetals, or metals.

Excerpt from the Wikipedia article “Semimetal”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Nanite, CC0, via Wikimedia Commons.