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Easy-to-configure zero-dimensional valley-chiral modes in a graphene point junction.
- Source :
-
Science advances [Sci Adv] 2024 Sep 13; Vol. 10 (37), pp. eadp6296. Date of Electronic Publication: 2024 Sep 11. - Publication Year :
- 2024
-
Abstract
- The valley degree of freedom in two-dimensional (2D) materials can be manipulated for low-dissipation quantum electronics called valleytronics. At the boundary between two regions of bilayer graphene with different atomic or electrostatic configuration, valley-polarized current has been realized. However, the demanding fabrication and operation requirements limit device reproducibility and scalability toward more advanced valleytronics circuits. We demonstrate a device architecture of a point junction where a valley-chiral 0D PN junction is easily configured, switchable, and capable of carrying valley current with an estimated polarization of ~80%. This work provides a building block in manipulating valley quantum numbers and scalable valleytronics.
Details
- Language :
- English
- ISSN :
- 2375-2548
- Volume :
- 10
- Issue :
- 37
- Database :
- MEDLINE
- Journal :
- Science advances
- Publication Type :
- Academic Journal
- Accession number :
- 39259786
- Full Text :
- https://doi.org/10.1126/sciadv.adp6296