Abstract
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 language | English |
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Pages (from-to) | 4590-4594 |
Number of pages | 5 |
Journal | Nano letters |
Volume | 10 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2010 Nov 10 |
All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering