| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials 2024
|
| Presentation Title |
Revealing Quantum Functionality of Thin Films by In Situ Characterization with Materials Cluster System |
| Author(s) |
Wonhee Ko |
| On-Site Speaker (Planned) |
Wonhee Ko |
| Abstract Scope |
Achieving unique quantum properties from the nanostructures is a key to realize novel electronic and quantum devices. Thin films of quantum materials are a promising candidate, but the quantum states in these films are highly fragile to the ambient condition and requires in situ growth and characterization techniques. We build materials cluster system that combines in situ epitaxial film growth and characterization instruments, such as molecular beam epitaxy, angle-resolved photoemission spectroscopy, and scanning tunneling microscopy. With the cluster system, we grew thin films of topological insulators and observed lattice and electronic structures in atomic scale. Interestingly, we found that the step edges possess Rashba edge states with unique spin texture, which interacts with topological surface states depending on the film thickness. The results demonstrate that the unique quantum functionality can be exhibited by materials cluster system, which will be fundamental to realize quantum devices with these films. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nanotechnology, Electronic Materials, Characterization |