Intertube coupling in ropes of single-wall carbon nanotubes

Citation
H. Stahl et al., Intertube coupling in ropes of single-wall carbon nanotubes, PHYS REV L, 85(24), 2000, pp. 5186-5189
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
24
Year of publication
2000
Pages
5186 - 5189
Database
ISI
SICI code
0031-9007(200012)85:24<5186:ICIROS>2.0.ZU;2-Y
Abstract
We investigate the coupling between individual tubes in a rope of single-wa ll carbon nanotubes using four probe resistance measurements. By introducin g defects through the controlled sputtering of the rope we generate a stron g nonmonotonic temperature dependence of the four terminal resistance. This behavior reflects the interplay between localization in the intentionally damaged tubes and coupling to undamaged tubes in the same rope. Using a sim ple model we obtain the coherence length and the coupling. resistance. The coupling mechanism is argued to involve direct tunneling between tubes.