Journal article
Valley-selective Landau-Zener oscillations in semi-Dirac p − n junctions
- Abstract:
- We study transport across p-n junctions of gapped two-dimensional semi-Dirac materials: nodal semimetals whose energy bands disperse quadratically and linearly along distinct crystal axes. The resulting electronic properties - relevant to materials such as TiO2/VO2 multilayers and α-(BEDT-TTF)2I3 salts - continuously interpolate between those of mono- and bilayer graphene as a function of propagation angle. We demonstrate that tunneling across the junction depends on the orientation of the tunnel barrier relative to the crystalline axes, leading to strongly nonmonotonic current-voltage characteristics, including negative differential conductance in some regimes. In multivalley systems, these features provide a natural route to engineering valley-selective transport.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Accepted manuscript, pdf, 507.1KB, Terms of use)
-
- Publisher copy:
- 10.1103/PhysRevB.96.045424
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review B More from this journal
- Volume:
- 96
- Issue:
- 4
- Pages:
- 045424
- Publication date:
- 2017-07-19
- Acceptance date:
- 2017-06-26
- DOI:
- EISSN:
-
2469-9969
- ISSN:
-
2469-9950
- Keywords:
- Pubs id:
-
pubs:725196
- UUID:
-
uuid:c5d5006e-a2c8-4100-82f6-6f09ca15af6e
- Local pid:
-
pubs:725196
- Source identifiers:
-
725196
- Deposit date:
-
2017-09-05
Terms of use
- Copyright holder:
- © 2017 American Physical Society
- Copyright date:
- 2017
- Notes:
- This is the author accepted manuscript following peer review version of the article. The final version is available online from American Physical Society at: 10.1103/PhysRevB.96.045424
If you are the owner of this record, you can report an update to it here: Report update to this record