2017 Fiscal Year Final Research Report
Hybrid 2D material/organic compound for novel spin devices
| Project/Area Number |
15K18058
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Keywords | トポロジカル / グラフェン / バレー流 / 超格子 / 量子輸送 |
|---|
| Outline of Final Research Achievements |
We have succeeded to fabricate graphene/hBN superlattice devices and have found the non-local resistance, which should be zero in usual case, becomes the order of quantum resistance. This indicates the first observation of the quantum valley Hall state via transport measurements and the results appeared in Science Advances. In such superlattice structure, an electron possesses valley degree of freedom, and it is expected that such valley current doesn't generate joule heating, indicating the possibility to achieve low power consumption devices. These results are important for realize valleytronics devices, quantum interference devices, and topological superconducting quantum information devices.
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| Free Research Field |
物性物理
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