Drude Metallic Response of Polypyrrole

Kohlman, R. S.; Joo, Jin; Wang, Y. Z.; Pouget, J.P.; Kaneko, Hiroshi; Ishiguro, Takehiko; Epstein, Arthur J.

doi:10.1103/physrevlett.74.773

Cited by 136 publications

(114 citation statements)

References 19 publications

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“…[22]. Hence, while we use this approximation (3) for deriving various analytical estimates, we rely on the full Drude permittivity (2) in our numerical calculations.…”

Section: Introductionmentioning

confidence: 99%

Thermal radiation and near-field energy density of thin metallic films

2007

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We study the properties of thermal radiation emitted by a thin dielectric slab, employing the framework of macroscopic fluctuational electrodynamics. Particular emphasis is given to the analytical construction of the required dyadic Green's functions. Based on these, general expressions are derived for both the system's Poynting vector, describing the intensity of propagating radiation, and its energy density, containing contributions from non-propagating modes which dominate the near-field regime. An extensive discussion is then given for thin metal films. It is shown that the radiative intensity is maximized for a certain film thickness, due to Fabry-Perot-like multiple reflections inside the film. The dependence of the near-field energy density on the distance from the film's surface is governed by an interplay of several length scales, and characterized by different exponents in different regimes. In particular, this energy density remains finite even for arbitrarily thin films. This unexpected feature is associated with the film's low-frequency surface plasmon polariton. Our results also serve as reference for current near-field experiments which search for deviations from the macroscopic approach.

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“…[22]. Hence, while we use this approximation (3) for deriving various analytical estimates, we rely on the full Drude permittivity (2) in our numerical calculations.…”

Section: Introductionmentioning

confidence: 99%

Thermal radiation and near-field energy density of thin metallic films

2007

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“…However, in the case of electrodeposited polypyrroles (such as polypyrrole doped with tetraborofluorate (BF 4 − ) and toluene sulfonate (TSO − )), this band was not observed. For heavily doped polypyrrole, a complex band structure was noticed for wavelength ranging from 1700 to 1000 cm − 1 [11]. The strongest band is located at 1640 cm − 1 and represents complex out of the plane vibrations [9].…”

Section: Resultsmentioning

confidence: 96%

“…Polypyrrole shows a plasma resonance in microwaves [11] while Fe exhibits a ferromagnetic resonance in the same frequencies domain, in magnetic fields of about 3500 Gs. Such composite is an ideal candidate for magnetically tuned negative index of refraction materials [18].…”

Section: Introductionmentioning

confidence: 98%

Electrodeposition and magnetic properties of polypyrrole–Fe nanocomposites

Chipara¹,

Skomski

Sellmyer

2007

Materials Letters

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“…68 Now, by considering Heisenberg spins in a classical context, in which quantum fluctuations are absent, the low-T and high-T limits of the H = 0 free energy and two-spin correlation functions have been calculated. 48 It is instructive to compare the T 0 result obtained for the classical ferrimagnetic AB 2 Heisenberg chain, (10) with that of the classical ferromagnetic linear Heisenberg chain, 69 (11) and that of Takahashi 8 for the quantum ferromagnetic spin-1/2 linear Heisenberg chain, (12) where (1/2)/(2 ) 1/2 −0.583. At low-T Fisher's and Takahashi's leading terms coincide and are three times larger than that of the AB 2 chain, due to the unit-cell topology effect.…”

Section: Analytical Resultsmentioning

confidence: 99%

“…3 Another family of organic magnetic polymers is that of the doped poly(m-aniline) compounds, in which the carbon atoms responsible for the links between the benzene rings are substituted by ionized nitrogen with a H-bond or a radical plus a charge acceptor. 9 On the other hand, doped polypyrrole compounds also exhibit 10 interesting magnetic properties and Drude metallic response as well.…”

Section: Quasi-one-dimensional Magnetic Compounds: a Brief Reviewmentioning

confidence: 99%

Magnetism and electronic correlations in quasi-one-dimensional compounds

Coutinho‐Filho¹,

Montenegro-Filho²,

Raposo³

et al. 2008

J. Braz. Chem. Soc.

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Nesta contribuição à celebração do octogésimo aniversário de nascimento do Prof. Ricardo Ferreira, apresentamos uma breve discussão sobre compostos magnéticos quase-unidimensionais. Esta tem sido uma área de pesquisa de intensa atividade, particularmente após a divulgação de verificações experimentais de magnetismo em polímeros organometálicos na década de 1980. Neste trabalho realizamos uma revisão das contribuições teóricas e experimentais sobre o assunto, com foco em sistemas de elétrons correlacionados em cadeias com célula unitária do tipo AB 2 presentes em compostos inorgânicos e orgânicos.In this contribution on the celebration of the 80th birthday anniversary of Prof. Ricardo Ferreira, we present a brief survey on the magnetism of quasi-one-dimensional compounds. This has been a research area of intense activity particularly since the first experimental announcements of magnetism in organic and organometallic polymers in the mid 80's. We review experimental and theoretical achievements on the field, featuring chain systems of correlated electrons in a special AB 2 unit cell structure present in inorganic and organic compounds.

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Drude Metallic Response of Polypyrrole

Cited by 136 publications

References 19 publications

Thermal radiation and near-field energy density of thin metallic films

Thermal radiation and near-field energy density of thin metallic films

Electrodeposition and magnetic properties of polypyrrole–Fe nanocomposites

Magnetism and electronic correlations in quasi-one-dimensional compounds

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