Chiral Spin Mode (IMAGE)

Rutgers University

Chiral Spin Mode

Caption

The blue and red cones show the energy and momentum of surface electrons in a 3D topological insulator. The spin structure is shown in the blue and red arrows at the top and bottom, respectively. Light promotes electrons from the blue cone into the red cone, with the spin direction flipping. The orderly spinning leads to the chiral spin mode observed in this study.

Credit

Hsiang-Hsi (Sean) Kung/Rutgers University-New Brunswick

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