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Optical conductivity of a commensurate graphene-topological insulator heterostructure
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sanderson, Matthew J. Huang, Sunchao Bao, Qiaoliang Zhang, Chao |
| Copyright Year | 2017 |
| Abstract | The optical conductivity of a heterostructure formed by a commensurate stacking of graphene and a topological insulator (TI) is investigated using the Kubo formalism. Both the intra- and interband AC conductivities are found to be sensitive to the graphene-TI coupling. The direct interband transition in graphene which is the origin of the universal conductance is forbidden due to the topological nature is the coupling. Furthermore, the graphene-TI coupling gives rise to additional broken symmetries, resulting in both the inter- and intraband conductivity to be reduced in the graphene-TI heterostructure. By varying the Fermi energy of the heterostructure, the band that gives the largest contribution changes, which in turn affects the overall electronic transport. |
| Starting Page | 385301 |
| Ending Page | 385301 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1088/1361-6463/aa81a7 |
| Volume Number | 50 |
| Alternate Webpage(s) | https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1725&context=eispapers1 |
| Alternate Webpage(s) | https://doi.org/10.1088/1361-6463%2Faa81a7 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
