Limits for metallic conductivity in conducting polymers

被引:177
作者
Kohlman, RS
Zibold, A
Tanner, DB
Ihas, GG
Ishiguro, T
Min, YG
MacDiarmid, AG
Epstein, AJ
机构
[1] UNIV FLORIDA, DEPT PHYS, GAINESVILLE, FL 32611 USA
[2] UNIV FLORIDA, CTR ULTRA LOW TEMP RES, GAINESVILLE, FL 32611 USA
[3] KYOTO UNIV, DEPT PHYS, KYOTO 60601, JAPAN
[4] UNIV PENN, DEPT CHEM, PHILADELPHIA, PA 19104 USA
[5] OHIO STATE UNIV, DEPT CHEM, COLUMBUS, OH 43210 USA
关键词
D O I
10.1103/PhysRevLett.78.3915
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The temperature (T) dependent de conductivity (sigma(DC)) (down to 20 mK) and dielectric function at optical frequencies (0.002-6 eV) and 6.5 GHz are used to probe the inhomogeneous disorder-driven insulator-metal transition in conducting polymers. A correlation between large low T sigma(DC) and the presence to low T of a small fraction of the carrier density delocalized with long transport times (>10(-13) s) indicates that metallic sigma(DC) is due to only a small fraction of the charge carriers. The achievable sigma(DC) for these systems when the entire charge carrier density participates is estimated to surpass that of copper.
引用
收藏
页码:3915 / 3918
页数:4
相关论文
共 28 条
[1]  
ABELL L, 1996, P SOC PLAST ENG ANN, P1417
[2]  
BERGMAN DJ, 1992, SOLID STATE PHYSICS, V46
[3]   MAGNETIC-SUSCEPTIBILITY OF POLYANILINE IN SOLUTION IN NONPOLAR ORGANIC-SOLVENTS AND IN POLYBLENDS IN POLY(METHYL METHACRYLATE) [J].
CAO, Y ;
HEEGER, AJ .
SYNTHETIC METALS, 1992, 52 (02) :193-200
[4]   ELECTRICAL-CONDUCTIVITY IN DOPED POLYACETYLENE [J].
CHIANG, CK ;
FINCHER, CR ;
PARK, YW ;
HEEGER, AJ ;
SHIRAKAWA, H ;
LOUIS, EJ ;
GAU, SC ;
MACDIARMID, AG .
PHYSICAL REVIEW LETTERS, 1977, 39 (17) :1098-1101
[5]   RESISTIVITY AND MAGNETORESISTANCE OF METALLIC POLYANILINE AND POLYPYRROLE AT MILLIKELVIN TEMPERATURES [J].
CLARK, JC ;
IHAS, GG ;
RAFANELLO, AJ ;
MEISEL, MW ;
REGHU, M ;
YOON, CO ;
CAO, Y ;
HEEGER, AJ .
SYNTHETIC METALS, 1995, 69 (1-3) :215-216
[6]   OPTICAL-PROPERTIES OF CESIUM TETRACYANOQUINODIMETHANIDE, CS2(TCNQ)3 [J].
CUMMINGS, KD ;
TANNER, DB ;
MILLER, JS .
PHYSICAL REVIEW B, 1981, 24 (08) :4142-4154
[7]   INHOMOGENEOUS DISORDER AND THE MODIFIED DRUDE METALLIC STATE OF CONDUCTING POLYMERS [J].
EPSTEIN, AJ ;
JOO, J ;
KOHLMAN, RS ;
DU, G ;
MACDIARMID, AG ;
OH, EJ ;
MIN, Y ;
TSUKAMOTO, J ;
KANEKO, H ;
POUGET, JP .
SYNTHETIC METALS, 1994, 65 (2-3) :149-157
[8]   LOGARITHMIC TEMPERATURE-DEPENDENCE OF RESISTIVITY IN HEAVILY DOPED CONDUCTING POLYMERS AT LOW-TEMPERATURE [J].
ISHIGURO, T ;
KANEKO, H ;
NOGAMI, Y ;
ISHIMOTO, H ;
NISHIYAMA, H ;
TSUKAMOTO, J ;
TAKAHASHI, A ;
YAMAURA, M ;
HAGIWARA, T ;
SATO, K .
PHYSICAL REVIEW LETTERS, 1992, 69 (04) :660-663
[9]   PHONON-INDUCED NONMETAL-METAL TRANSITION OF A DOPED POLYANILINE [J].
JOO, J ;
PRIGODIN, VN ;
MIN, YG ;
MACDIARMID, AG ;
EPSTEIN, AJ .
PHYSICAL REVIEW B, 1994, 50 (16) :12226-12229
[10]   INTRINSIC CONDUCTIVITY OF CONDUCTING POLYMERS [J].
KIVELSON, S ;
HEEGER, AJ .
SYNTHETIC METALS, 1988, 22 (04) :371-384