Heusler, Weyl and Berry (IMAGE)
Caption
The figure shows the connection between the Weyl fermions and Berry phase and its realization in the Heusler family of compounds. In the top panel, we present a typical atomic arrangement of a full-Heusler alloy where the red and blue spheres are transition metals (like cobalt or iron), with red being more electropositive than blue, and the green sphere is a main group element (like silicon or Gallium). In the lower panel, the electronic structure of the Weyl semimetal is displayed. The yellow and bright green points present the magnetic monopoles in a chiral Weyl semimetal and the black arrows denote the Berry curvature in the momentum space.
Credit
Heusler: Isabellenhütte GmbH & Co. KG; Weyl: ETH Zürich Bildarchiv; Berry: Michael Berry
Usage Restrictions
None
License
Licensed content