| Title: |
Engineering Robust Metallic Zero-Mode States in Olympicene Graphene Nanoribbons |
| Authors: |
McCurdy, Ryan D., Delgado, Aidan, Jiang, Jingwei, Zhu, Junmian, Wen, Ethan Chi Ho, Blackwell, Raymond E., Veber, Gregory C., Wang, Shenkai, Louie, Steven G., Fischer, Felix R. |
| Publication Year: |
2023 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Materials Science |
| More Details: |
Metallic graphene nanoribbons (GNRs) represent a critical component in the toolbox of low-dimensional functional materials technolo-gy serving as 1D interconnects capable of both electronic and quantum information transport. The structural constraints imposed by on-surface bottom-up GNR synthesis protocols along with the limited control over orientation and sequence of asymmetric monomer building blocks during the radical step-growth polymerization has plagued the design and assembly of metallic GNRs. Here we report the regioregular synthesis of GNRs hosting robust metallic states by embedding a symmetric zero-mode superlattice along the backbone of a GNR. Tight-binding electronic structure models predict a strong nearest-neighbor electron hopping interaction between adjacent zero-mode states resulting in a dispersive metallic band. First principles DFT-LDA calculations confirm this prediction and the robust, metallic zero-mode band of olympicene GNRs (oGNRs) is experimentally corroborated by scanning tunneling spectroscopy.
Comment: 8 pages, 4 figures |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2302.08446 |
| Accession Number: |
edsarx.2302.08446 |
| Database: |
arXiv |
