Article
 

Universal interaction-driven gap in metallic carbon nanotubes

Public Deposited

Downloadable Content

Download PDF
Request Accessible Version
https://ir.library.oregonstate.edu/concern/articles/r207tv41d

Descriptions

Attribute NameValues
Creator
Abstract
  • Suspended metallic carbon nanotubes (m-CNTs) exhibit a remarkably large transport gap that can exceed 100 meV. Both experiment and theory suggest that strong electron-electron interactions play a crucial role in generating this electronic structure. To further understand this strongly-interacting system, we have performed electronic measurements of suspended m-CNTs with known diameter and chiral angle. Spectrally-resolved photocurrent microscopy was used to determine m-CNT structure. The room-temperature electrical characteristics of 18 individual-contacted m-CNTs were compared to their respective diameter and chiral angle. At the charge neutrality point, we observe a peak in m-CNT resistance that scales exponentially with inverse diameter. Using a thermally-activated transport model, we estimate that the transport gap is 450 meV∙nm/D where D is CNT diameter. We find no correlation between the gap and the CNT chiral angle. Our results add important new constraints to theories attempting to describe the electronic structure of m-CNTs.
License
Resource Type
DOI
Date Issued
Citation
  • Phys. Rev. B 97, 035445 (2018)
Journal Title
Journal Volume
  • 97
Journal Issue/Number
  • 3
Academic Affiliation
Rights Statement
Publisher
Peer Reviewed
Language
Accessibility Feature

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details 2018-Senger_b.pdf 2018-01-31 Public Download