A magnetic field perpendicular to the graphene sheet curves the paths of electrons and ‘holes’ (blue and orange). Voltages applied to the electrodes, shown in gold, create potential barriers that act as guardrails. (IMAGE)

Helmholtz-Zentrum Dresden-Rossendorf

A magnetic field perpendicular to the graphene sheet curves the paths of electrons and ‘holes’ (blue and orange). Voltages applied to the electrodes, shown in gold, create potential barriers that act as guardrails.

Caption

Electrical guardrails for charge carriers: A magnetic field perpendicular to the graphene sheet curves the paths of electrons and ‘holes’ (blue and orange). Voltages applied to the electrodes, shown in gold, create potential barriers that act as guardrails.

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B. Schröder/HZDR

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