Enhanced conductance fluctuation by quantum confinement effect in graphene nanoribbons

Guangyu Xu, Carlos M. Torres, Emil B. Song, Jianshi Tang, Jingwei Bai, Xiangfeng Duan, Yuegang Zhang, Kang L. Wang

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


Conductance fluctuation is usually unavoidable in graphene nanoribbons (GNR) due to the presence of disorder along its edges. By measuring the low-frequency noise in GNR devices, we find that the conductance fluctuation is strongly correlated with the density-of-states of GNR. In single-layer GNR, the gate-dependence of noise shows peaks whose positions quantitatively match the subband positions in the band structures of GNR. This correlation provides a robust mechanism to electrically probe the band structure of GNR, especially when the subband structures are smeared out in conductance measurement.

Original languageEnglish
Pages (from-to)4590-4594
Number of pages5
JournalNano letters
Issue number11
Publication statusPublished - 2010 Nov 10

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


Dive into the research topics of 'Enhanced conductance fluctuation by quantum confinement effect in graphene nanoribbons'. Together they form a unique fingerprint.

Cite this