A zigzag blueprint for topological electronics

https://phys.org/news/2022-03-zigzag-blueprint-topological-electronics.html

"act more like the 2D case, where gate electric field switches edge state conductance while closing and reopening bulk bandgap... [a] topological switching mechanism in large-gap confined zigzag-Xene-nanoribbons overturns the general wisdom of utilizing narrow gap and wide channel materials for reducing threshold-voltage in a standard field effect transistor analysis... topological quantum field effect transistor utilizing zigzag-Xene-nanoribbons as a channel material has several advantages of engineering"