Bibliographic Details
| Title: |
Observation of drastic electronic structure change in one-dimensional moir\'e crystals |
| Authors: |
Zhao, Sihan, Moon, Pilkyung, Miyauchi, Yuhei, Matsuda, Kazunari, Koshino, Mikito, Kitaura, Ryo |
| Source: |
Phys. Rev. Lett. 124, 106101 (2020) |
| Publication Year: |
2019 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Mesoscale and Nanoscale Physics |
| More Details: |
We report the first experimental observation of strong coupling effect in one-dimensional moir\'e crystals. We study one-dimensional double-wall carbon nanotubes (DWCNTs) in which van der Waals-coupled two single nanotubes form one-dimensional moir\'e superlattice. We experimentally combine Rayleigh scattering spectroscopy and electron beam diffraction on the same individual DWCNTs to probe the optical transitions of structure-identified DWCNTs in the visible spectral range. Among more than 30 structure-identified DWCNTs examined, we experimentally observed and identified a drastic change of optical transition spectrum in DWCNT with chirality (12,11)@(17,16). The origin of the marked change is attributed to the strong intertube coupling effect in a moir\'e superlattice formed by two nearly-armchair nanotubes. Our numerical simulation is consistent to these experimental findings. |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.124.106101 |
| Access URL: |
http://arxiv.org/abs/1906.09421 |
| Accession Number: |
edsarx.1906.09421 |
| Database: |
arXiv |
