Laminated deposition enabled two-dimensional bismuth antimony diodes with a cut-off frequency of ∼50 GHz
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As a prototypical topological insulator, the bismuth-antimony (Bi1-xSbx) alloy offers both a large spin Hall angle and high carrier mobility. However, preserving their surface-dominated transport properties in the quasi-two-dimensional (quasi-2D) limit remains... ...
