Localised and delocalized charge transport in single-wall carbon-nanotube mats

被引：78

作者：

Hilt, O

Brom, HB

Ahlskog, M

机构：

[1] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands

[2] Aalto Univ, Low Temp Lab, FIN-02015 Helsinki, Finland

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.61.R5129

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We measured the complex dielectric constant in mats of single-wall carbon nanotubes between 2.7 K and 300 K up to 0.5 THz. The data are well understood in a Drude approach with a negligible temperature dependence of the plasma frequency omega(p) and scattering time tau with an additional contribution of localized charges. The dielectric properties resemble those of the best "metallic" polypyrroles and polyanilines. The absence of metallic islands makes the mats a relevant piece in the puzzle of the interpretation of tau and omega(p) in these polymers.

引用

收藏

页码：R5129 / R5132

页数：4

相关论文

共 30 条

[1] High-dilution carbon-black/polymer composites: Hierarchical percolating network derived from Hz to THz ac conductivity [J].

Adriaanse, LJ ;

Reedijk, JA ;

Teunissen, PAA ;

Brom, HB ;

Michels, MAJ ;

BrokkenZijp, JCM .

PHYSICAL REVIEW LETTERS, 1997, 78 (09) :1755-1758

[2]

Ashcroft N. W., 1973, SOLID STATE PHYS

[3] Multiprobe transport experiments on individual single-wall carbon nanotubes [J].

Bezryadin, A ;

Verschueren, ARM ;

Tans, SJ ;

Dekker, C .

PHYSICAL REVIEW LETTERS, 1998, 80 (18) :4036-4039

[4]

Bottger H., 1985, Hopping Conduction in Solids, DOI [10.1515/9783112618189, DOI 10.1515/9783112618189]

[5] Low-energy conductivity of PF6-doped polypyrrole [J].

Chapman, B ;

Buckley, RG ;

Kemp, NT ;

Kaiser, AB ;

Beaglehole, D ;

Trodahl, HJ .

PHYSICAL REVIEW B, 1999, 60 (19) :13479-13483

[6] Effective low-energy theory for correlated carbon nanotubes [J].

Egger, R ;

Gogolin, AO .

PHYSICAL REVIEW LETTERS, 1997, 79 (25) :5082-5085

[7] Nonlinear coherent transport through doped nanotube junctions [J].

Farajian, AA ;

Esfarjani, K ;

Kawazoe, Y .

PHYSICAL REVIEW LETTERS, 1999, 82 (25) :5084-5087

[8] Metallic resistivity in crystalline ropes of single-wall carbon nanotubes [J].

Fischer, JE ;

Dai, H ;

Thess, A ;

Lee, R ;

Hanjani, NM ;

Dehaas, DL ;

Smalley, RE .

PHYSICAL REVIEW B, 1997, 55 (08) :R4921-R4924

[9]

Fuhrer MS, 1999, SOLID STATE COMMUN, V109, P105, DOI 10.1016/S0038-1098(98)00520-1

[10] NEW ONE-DIMENSIONAL CONDUCTORS - GRAPHITIC MICROTUBULES [J].

HAMADA, N ;

SAWADA, S ;

OSHIYAMA, A .

PHYSICAL REVIEW LETTERS, 1992, 68 (10) :1579-1581