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Terahertz wave generation and detection in double-graphene layered van der Waals heterostructures
| Content Provider | Scilit |
|---|---|
| Author | Yadav, Deepika Tombet, Stephane Boubanga Watanabe, Takayuki Arnold, Stevanus Ryzhii, Victor Otsuji, Taiichi |
| Copyright Year | 2016 |
| Description | Journal: 2d Materials We report on the first experimental observation of terahertz emission and detection in a double graphene layered (GL) heterostructure which comprises a thin hexagonal-boron nitride tunnel-barrier layer sandwiched between two separately contacted GLs. Inter-GL population inversion is induced by electrically biasing the structure. Resonant tunneling and negative differential resistance is expected when the two graphene band structures are perfectly aligned. However, in the case of small misalignments we demonstrate that the photon-absorption/emission-assisted non-resonant- and resonant-tunneling causes all excess charges in the n-type GL to recombine with the holes in the p-type GL giving rise to an increased measured dc current. This work highlights a novel strategy for the realization of efficient voltage-tunable terahertz emitters and detectors. |
| Related Links | https://iopscience.iop.org/article/10.1088/2053-1583/3/4/045009/pdf |
| ISSN | 20531583 |
| e-ISSN | 20531583 |
| DOI | 10.1088/2053-1583/3/4/045009 |
| Journal | 2d Materials |
| Issue Number | 4 |
| Volume Number | 3 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2016-10-14 |
| Access Restriction | Open |
| Subject Keyword | Journal: 2d Materials |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Mechanics of Materials Condensed Matter Physics Materials Science Mechanical Engineering |
