Modulation of the Local Density of States of Carbon Nanotubes by Encapsulation of Europium Nanowires As Observed by Scanning Tunneling Microscopy and Spectroscopy
| Autor: | Susumu Okada, Osamu Takeuchi, Ryo Kitaura, Shoji Yoshida, Takazumi Kawai, Terunobu Nakanishi, Hidemi Shigekawa, Hisanori Shinohara |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Band gap Nanowire Analytical chemistry chemistry.chemical_element 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences law.invention Condensed Matter::Materials Science law Physics::Atomic and Molecular Clusters Physical and Theoretical Chemistry Local density of states 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy chemistry Chemical physics Density of states Density functional theory Scanning tunneling microscope 0210 nano-technology Europium |
| Zdroj: | The Journal of Physical Chemistry C. 121:18195-18201 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | Modulation of the local density of states of single-wall carbon nanotubes (SWCNTs) is induced by the encapsulation of europium nanowires (EuNWs). The observation of these modulated density of states using scanning tunneling microscopy/spectroscopy combined with density functional theory calculations is reported. The electronic modulation of SWCNTs by encapsulation of EuNWs is revealed as a Fermi level shift, band gap reduction, and the emergence of localized states in the gap. The present results show that the electronic interaction between EuNWs and SWCNTs is much stronger than that previously reported for nanomaterials encapsulated in SWCNTs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|