Thus , room - temperature applications of the quantum spin Hall effect come into reach .
However the bandgap is as large as 800mV due to the large spin - orbit - coupling of the Bi atoms and their interaction with the substrate .
Room - temperature applications of the quantum spin Hall effect come into reach .
However the bandgap is as large as 800mV due to the large spin - orbit - coupling of the Bi atoms and their interaction with the substrate .