Chiral Motion of Electrons in a Chern Topological Magnet - Video (VIDEO)

Princeton University

Caption

The arrows represent the electron spins pointing up from a kagome lattice. The chirality is represented by the counterclockwise circle of fire, which represents the propagating electrons/current on the edge of the magnet. The two cones demonstrate that the bulk of the magnet contains Dirac fermions (linear or conical dispersion of bands) with an energy gap (Chern gap), making it topological.

Credit

Image by M. Zahid Hasan group, Princeton University

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Image by M. Zahid Hasan group, Princeton University

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