Disorder-induced neutral solitons in degenerate ground state polymers

M. T. Figge; M. V. Mostovoy; J. Knöster

doi:10.1016/S0379-6779(98)00827-3

Disorder-induced neutral solitons in degenerate ground state polymers

M. T. Figge, M. V. Mostovoy, J. Knöster

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Abstract

Submitted to: Synth. Met. Abstract: In this letter, we study the effects of weak off-diagonal disorder on conjugated polymers with a doubly degenerate ground-state. We find that disorder induces a finite density of neutral solitons in the lattice dimerization of a polymer chain. Interchain interactions result in a linear potential between the solitons and, if sufficiently strong, bind them into pairs resulting in an exponential suppression of the soliton density. As neutral solitons carry spin 1/2, they contribute to the polymer's magnetic properties. We calculate the magnetic susceptibility and suggest measurements of the magnetic susceptibility in {it trans}-polyacetylene at low temperatures. Submitter: M.T.Figge@phys.rug.nl (Marc Thilo Figge)

Original language	English
Pages (from-to)	388 - 389
Number of pages	2
Journal	Synthetic Metals
Volume	101
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(98)00827-3
Publication status	Published - 1999
Event	International Conference on Science and Technology of Synthetic Metals (ICSM 98) - , France Duration: 12-Jul-1998 → 18-Jul-1998

Keywords

polyacetylene and derivatives
magnetic measurements
Ising models
order-disorder phase transitions
POLYACETYLENE

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title = "Disorder-induced neutral solitons in degenerate ground state polymers",

abstract = "Submitted to: Synth. Met. Abstract: In this letter, we study the effects of weak off-diagonal disorder on conjugated polymers with a doubly degenerate ground-state. We find that disorder induces a finite density of neutral solitons in the lattice dimerization of a polymer chain. Interchain interactions result in a linear potential between the solitons and, if sufficiently strong, bind them into pairs resulting in an exponential suppression of the soliton density. As neutral solitons carry spin 1/2, they contribute to the polymer's magnetic properties. We calculate the magnetic susceptibility and suggest measurements of the magnetic susceptibility in {it trans}-polyacetylene at low temperatures. Submitter: M.T.Figge@phys.rug.nl (Marc Thilo Figge)",

keywords = "polyacetylene and derivatives, magnetic measurements, Ising models, order-disorder phase transitions, POLYACETYLENE",

author = "Figge, {M. T.} and Mostovoy, {M. V.} and J. Kn{\"o}ster",

note = "Relation: http://www.rug.nl/ date_submitted:2006 Rights: University of Groningen; International Conference on Science and Technology of Synthetic Metals (ICSM 98) ; Conference date: 12-07-1998 Through 18-07-1998",

year = "1999",

doi = "10.1016/S0379-6779(98)00827-3",

language = "English",

volume = "101",

pages = "388 -- 389",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier Science",

number = "1-3",

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TY - JOUR

T1 - Disorder-induced neutral solitons in degenerate ground state polymers

AU - Figge, M. T.

AU - Mostovoy, M. V.

AU - Knöster, J.

N1 - Relation: http://www.rug.nl/ date_submitted:2006 Rights: University of Groningen

PY - 1999

Y1 - 1999

N2 - Submitted to: Synth. Met. Abstract: In this letter, we study the effects of weak off-diagonal disorder on conjugated polymers with a doubly degenerate ground-state. We find that disorder induces a finite density of neutral solitons in the lattice dimerization of a polymer chain. Interchain interactions result in a linear potential between the solitons and, if sufficiently strong, bind them into pairs resulting in an exponential suppression of the soliton density. As neutral solitons carry spin 1/2, they contribute to the polymer's magnetic properties. We calculate the magnetic susceptibility and suggest measurements of the magnetic susceptibility in {it trans}-polyacetylene at low temperatures. Submitter: M.T.Figge@phys.rug.nl (Marc Thilo Figge)

AB - Submitted to: Synth. Met. Abstract: In this letter, we study the effects of weak off-diagonal disorder on conjugated polymers with a doubly degenerate ground-state. We find that disorder induces a finite density of neutral solitons in the lattice dimerization of a polymer chain. Interchain interactions result in a linear potential between the solitons and, if sufficiently strong, bind them into pairs resulting in an exponential suppression of the soliton density. As neutral solitons carry spin 1/2, they contribute to the polymer's magnetic properties. We calculate the magnetic susceptibility and suggest measurements of the magnetic susceptibility in {it trans}-polyacetylene at low temperatures. Submitter: M.T.Figge@phys.rug.nl (Marc Thilo Figge)

KW - polyacetylene and derivatives

KW - magnetic measurements

KW - Ising models

KW - order-disorder phase transitions

KW - POLYACETYLENE

U2 - 10.1016/S0379-6779(98)00827-3

DO - 10.1016/S0379-6779(98)00827-3

M3 - Article

SN - 0379-6779

VL - 101

SP - 388

EP - 389

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

T2 - International Conference on Science and Technology of Synthetic Metals (ICSM 98)

Y2 - 12 July 1998 through 18 July 1998

ER -