Project/Area Number |
22K13989
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
|
Research Institution | Institute of Physical and Chemical Research |
Principal Investigator |
Tu Han 国立研究開発法人理化学研究所, 創発物性科学研究センター, 特別研究員 (00862327)
|
Project Period (FY) |
2022-04-01 – 2024-03-31
|
Project Status |
Granted (Fiscal Year 2022)
|
Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2023: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
Keywords | topological insulator / Majorana fermion / graphene / heterostructure |
Outline of Research at the Start |
We realize a new 2D-TI in a stacking structure of graphene and 3D-TI. The helical edge states in the proposed structure locate along the physical edges of the sample, which readily forms contacts with other materials, providing a platform for using this 2D-TI in future applications. Using the observed helical edge states, we investigate the Majorana bound state (MBS) in the QSH anti-wires devices. The interesting feature of this design is that the presence of MBS could be directly observed by the sign of multiterminal conductance in the absence of ferromagnetic contacts.
|