Hetero-site nucleation for growing twisted bilayer graphene with a wide range of twist angles.
Nature communications 12:1 (2021) 2391
Abstract:
Twisted bilayer graphene (tBLG) has recently attracted growing interest due to its unique twist-angle-dependent electronic properties. The preparation of high-quality large-area bilayer graphene with rich rotation angles would be important for the investigation of angle-dependent physics and applications, which, however, is still challenging. Here, we demonstrate a chemical vapor deposition (CVD) approach for growing high-quality tBLG using a hetero-site nucleation strategy, which enables the nucleation of the second layer at a different site from that of the first layer. The fraction of tBLGs in bilayer graphene domains with twist angles ranging from 0° to 30° was found to be improved to 88%, which is significantly higher than those reported previously. The hetero-site nucleation behavior was carefully investigated using an isotope-labeling technique. Furthermore, the clear Moiré patterns and ultrahigh room-temperature carrier mobility of 68,000 cm2 V-1 s-1 confirmed the high crystalline quality of our tBLG. Our study opens an avenue for the controllable growth of tBLGs for both fundamental research and practical applications.Measurement of electronic structure and surface reconstruction in the superionic Cu2−xTe
Physical Review B American Physical Society (APS) 103:11 (2021) 115127
A charge-density-wave topological semimetal
Nature Physics Springer Nature 17:3 (2021) 381-387
Visualization of the electronic phase separation in superconducting KxFe2−ySe2
Nano Research Springer Nature 14:3 (2021) 823-828
Publisher Correction: A charge-density-wave topological semimetal
Nature Physics Springer Nature 17:2 (2021) 284-284