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Topological matter

Topological matter

Graphene’s ‘cousin’ makes a switchable topological insulator

14 Jun 2023 Isabelle Dumé
Diagram of a flat sheet of germanene, a two-dimensional, graphene-like form of the element germanium. Red and blue arrows representing spin and current flow line the edges of the sheet, showing how the material can carry electricity along its edges with no resistance
Germanene, the germanium analogue to graphene. Courtesy: P Bampoulis
Germanene – a two-dimensional, graphene-like form of the element germanium – can carry electrici

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Isabelle Dumé is a contributing editor to Physics World
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