Demonstration of surface transport in a hybrid Bi2Se3/Bi2Te3 heterostructure
Demonstration of surface transport in a hybrid Bi2Se3/Bi2Te3 heterostructure
In spite of much work on topological insulators (TIs), systematic experiments for TI/TI heterostructures remain absent. We grow a high quality heterostructure containing single quintuple layer (QL) of Bi2Se3 on 19 QLs of Bi2Te3 and compare its transport properties with 20 QLs Bi2Se3 and 20 QLs Bi2Te3. All three films …