HIGH-PRESSURE ELECTRON-SPIN DYNAMICS IN DISORDERED CONDUCTING POLYMERS

被引：11

作者：

CHAUVET, O ^{[1
]}

SIENKIEWICZ, A ^{[1
]}

FORRO, L ^{[1
]}

ZUPPIROLI, L ^{[1
]}

机构：

[1] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.52.R13118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a study of the electron-spin dynamics in disordered conducting polymers by high-pressure electron-spin-resonance (ESR) measurements. Our model system is a polypyrrole doped with long chains of polyanion. Applying pressure the ESR linewidth increases with a rate of 50%/kbar, the spin susceptibility decreases by 30%/kbar, while the resistivity is decreased only by 3%/kbar. We can quantitatively account for the observed behavior in a model where the magnetic properties are dominated by thermally excited triplet bipolarons.

引用

收藏

页码：13118 / 13121

页数：4

相关论文

共 20 条

[1] OXYGEN-INDUCED ESR LINE BROADENING IN CONDUCTING POLYMERS [J].

AASMUNDTVEIT, K ;

GENOUD, F ;

HOUZE, E ;

NECHTSCHEIN, M .

SYNTHETIC METALS, 1995, 69 (1-3) :193-196

[2] INFLUENCE OF OXYGEN ON THE PARAMAGNETIC PROPERTIES OF POLYPYRROLE LAYERS [J].

BARTL, A ;

DUNSCH, L ;

SCHMEISSER, D ;

GOPEL, W ;

NAARMANN, H .

SYNTHETIC METALS, 1995, 69 (1-3) :389-390

[3] BIPOLARON SINGLET AND TRIPLET-STATES IN DISORDERED CONDUCTING POLYMERS [J].

BUSSAC, MN ;

ZUPPIROLI, L .

PHYSICAL REVIEW B, 1993, 47 (09) :5493-5496

[4] MAGNETIC AND TRANSPORT-PROPERTIES OF POLYPYRROLE DOPED WITH POLYANIONS [J].

CHAUVET, O ;

PASCHEN, S ;

FORRO, L ;

ZUPPIROLI, L ;

BUJARD, P ;

KAI, K ;

WERNET, W .

SYNTHETIC METALS, 1994, 63 (02) :115-119

[5] TRIPLET BIPOLARONS IN DISORDERED CONDUCTING POLYMERS - AN ESR STUDY [J].

CHAUVET, O ;

PASCHEN, S ;

BUSSAC, MN ;

ZUPPIROLI, L .

EUROPHYSICS LETTERS, 1994, 26 (08) :619-624

[6] PRESSURE-DEPENDENCE OF THE CONDUCTION-ELECTRON-SPIN-RESONANCE LINEWIDTH OF THE ALPHA-PHASES AND BETA-PHASES OF DI-BIS(ETHYLENEDIOTHIOLO) TETRATHIAFULVALENE TRIIODIDE [J].

FORRO, L ;

SEKRETARCZYK, G ;

KRUPSKI, M ;

SCHWEITZER, D ;

KELLER, H .

PHYSICAL REVIEW B, 1987, 35 (05) :2501-2504

[7] CONDUCTION ELECTRON-SPIN-RESONANCE MEASUREMENTS ON TTF-TCNQ AND (TMTTF)2BF4 UNDER HYDROSTATIC-PRESSURE [J].

FORRO, L ;

COOPER, JR ;

SEKRETARCZYK, G ;

KRUPSKI, M ;

KAMARAS, K .

JOURNAL DE PHYSIQUE, 1987, 48 (03) :413-418

[8] ELECTRON-SPIN-RESONANCE STUDY OF ELECTROCHEMICAL DOPING IN THE CONDUCTING POLYMER POLYPYRROLE [J].

GENOUD, F ;

GUGLIELMI, M ;

NECHTSCHEIN, M ;

GENIES, E ;

SALMON, M .

PHYSICAL REVIEW LETTERS, 1985, 55 (01) :118-121

[9] ORGANIC CONDUCTORS AND SUPERCONDUCTORS [J].

JEROME, D ;

SCHULZ, HJ .

ADVANCES IN PHYSICS, 1982, 31 (04) :299-490

[10] MAGNETIC-SUSCEPTIBILITY ANALYSIS OF POLYANILINE AND ITS DERIVATIVES IN TERMS OF TRIPLET BIPOLARONS [J].

KAHOL, PK ;

SPENCER, WR ;

PINTO, NJ ;

MCCORMICK, BJ .

PHYSICAL REVIEW B, 1994, 50 (24) :18647-18650