SciPost Submission Page
Probing valley phenomena with gate-defined valley splitters
by Juan Daniel Torres Luna, Kostas Vilkelis, Antonio Lucas Rigotti Manesco
Submission summary
| Authors (as registered SciPost users): | Antonio Manesco · Juan Daniel Torres Luna |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202406_00021v1 (pdf) |
| Code repository: | https://zenodo.org/records/11091444 |
| Data repository: | https://zenodo.org/records/11091444 |
| Date submitted: | 2024-06-11 12:37 |
| Submitted by: | Torres Luna, Juan Daniel |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
|
| Approaches: | Theoretical, Computational |
Abstract
Despite many reports of valley-related phenomena in graphene and its multilayers, current transport experiments cannot probe valley phenomena without the application of external fields. Here we propose a gate-defined valley splitter as a direct transport probe for valley phenomenon in graphene multilayers. First, we show how the device works, its magnetotransport response, and its robustness against fabrication errors. Secondly, we present two applications for valley splitters: (i) resonant tunnelling of quantum dots probed by a valley splitter shows the valley polarization of dot levels; (ii) a combination of two valley splitters resolves the nature of order parameters in mesoscopic samples.
Author indications on fulfilling journal expectations
- Provide a novel and synergetic link between different research areas.
- Open a new pathway in an existing or a new research direction, with clear potential for multi-pronged follow-up work
- Detail a groundbreaking theoretical/experimental/computational discovery
- Present a breakthrough on a previously-identified and long-standing research stumbling block
Current status:
In refereeing