Semimetal

Definitions

  • Webster's Revised Unabridged Dictionary
    • n Semimetal (Chem) An element possessing metallic properties in an inferior degree and not malleable, as arsenic, antimony, bismuth, molybdenum, uranium, etc.
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Century Dictionary and Cyclopedia
    • n semimetal In old chemistry, a metal that is not malleable, as bismuth, arsenic, antimony, zinc, etc. The semi-metals were at first called “bastards” of the metals proper: thns, antimony was considered to be the bastard of lead, bismuth of tin, etc. The number, character, and relations of the semi-metals were quite differently given by the older chemists: Boerhave classed various ores among them; Brandt (1735) made them six in number—namely, quicksilver, antimony, bismuth, cobalt, arsenic, and zinc. His putting cobalt (a malleable and ductile metal) among the semi-metals was due to the fact that the nature of this metal was only very imperfectly known at that time.
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Usage


In news:

Part of the Semiconductors and Semimetals Series.
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In science:

In a semimetal, the map isn’t continuous since the occupied states in the vicinity of a gapless point change discontinuously.
Beyond Band Insulators: Topology of Semi-metals and Interacting Phases
Intuitively, we may imagine a complete Fermi surface being present when we begin with a thin sample of Weyl semimetal.
Beyond Band Insulators: Topology of Semi-metals and Interacting Phases
The surface states are obtained by mapping three dimensional Weyl semimetals to Chern insulators in two dimensions as we now explain.
Beyond Band Insulators: Topology of Semi-metals and Interacting Phases
This observation explains why there are surface states in the Weyl semimetal.
Beyond Band Insulators: Topology of Semi-metals and Interacting Phases
Condensed matter derivation of the anomaly–Consider a Weyl semimetal with cross-sectional area A and length Lz in an electric and a magnetic field applied along z .
Beyond Band Insulators: Topology of Semi-metals and Interacting Phases
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