Electrical tuning of helical edge states in topological multilayers

22 Jul 2019 Campos T. Sandoval M. A. T. Diago-Cisneros L. Sipahi G. M.

Mainstream among topological insulators, GaSb/InAs quantum wells present a broken gap alignment for the energy bands which supports the quantum spin Hall insulator phase and forms an important building block in the search of exotic states of matter. Such structures allow the band-gap inversion with electrons and holes confined in adjacent layers, providing a fertile ground to tune the corresponding topological properties... (read more)

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