Phys. Rev. B 55, R4921–R4924 (1997)Metallic resistivity in crystalline ropes of single-wall carbon nanotubes
Laser ablation of (Co,Ni)-doped graphite yields ∼ 70% single-wall nanotubes, predominantly (10,10) armchair tubes which self-organize into crystalline ``ropes''>100 Å in diameter and>10 μm long. We find ρ‖=0.03-0.10mΩ cm at 300 K, with positive (negative) dρ/dT above (below) T = 35 K. Unoriented bulk samples exhibit similar behavior, with higher (directionally averaged) resistivities and T*'s. The high-T behavior is consistent with the predicted intrinsic metallic state for this structure. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.55.R4921
DOI:
10.1103/PhysRevB.55.R4921
PACS:
72.80.Rj, 72.15.Eb, 72.15.Rn
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.