Electron spin resonance and microwave resistivity of single-wall carbon nanotubes

Petit, P.; Jouguelet, E.; Fischer, J. E.; Rinzler, Andrew G.; Smalley, R. E.

doi:10.1103/physrevb.56.9275

Cited by 96 publications

(80 citation statements)

References 20 publications

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“…However, to our knowledge no conclusive evidence for this observation has been reported. An often cited argument for this anomalous absence of the ESR signal is the large heterogeneity of the system, the lack of crystallinity, and the presence of magnetic catalyst particles [15,16,17]. However, ESR signal of conduction electrons has been indeed observed for electron doped SWCNTs [16], which are known to be Fermi liquids rather than the pristine SWCNTs [11].…”

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confidence: 99%

“…In three-dimensional metals, the ESR signal intensity is proportional to the Pauli spin-susceptibility, the ESR line-width and g-factor are determined by the mixing of spin up and down states due to spin-orbit (SO) coupling in the conduction band. These ESR measurables are affected when correlations are present and thus their study holds information about the nature of the correlated state.This motivated a decade long quest to find the ESR signal of itinerant electrons in SWCNTs and to characterize its properties in the framework of the expected correlations [15,16,17]. Detection of ESR in SWCNTs is also vital for applications as it enables to determine the spinlattice relaxation time, T 1 , which determines the usability for spintronics [18].…”

mentioning

confidence: 99%

“…This motivated a decade long quest to find the ESR signal of itinerant electrons in SWCNTs and to characterize its properties in the framework of the expected correlations [15,16,17]. Detection of ESR in SWCNTs is also vital for applications as it enables to determine the spinlattice relaxation time, T 1 , which determines the usability for spintronics [18].…”

mentioning

confidence: 99%

“…The DOS was ob-tained with a Green's function approach from the band structure that was calculated with a large k-point sampling. We considered the (9,9), (15,6), (10,10), (18,0), and (11,11) SWCNTs in order of increasing diameter. Here (n, m) denotes the lattice vectors on the graphene basis along which a cut-out stripe is folded up to represent a SWCNT [31].…”

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confidence: 99%

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Electron Spin Resonance Signal of Luttinger Liquids and Single-Wall Carbon Nanotubes

et al. 2008

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A comprehensive theory of electron spin resonance (ESR) for a Luttinger liquid (LL) state of correlated metals is presented. The ESR measurables such as the signal intensity and the line-width are calculated in the framework of Luttinger liquid theory with broken spin rotational symmetry as a function of magnetic field and temperature. We obtain a significant temperature dependent homogeneous line-broadening which is related to the spin symmetry breaking and the electronelectron interaction. The result crosses over smoothly to the ESR of itinerant electrons in the non-interacting limit. These findings explain the absence of the long-sought ESR signal of itinerant electrons in single-wall carbon nanotubes when considering realistic experimental conditions. PACS numbers: 73.63.Fg, The experimental and theoretical studies of strong correlation effects are in the forefront of condensed matter research. Low-dimensional carbonaceous systems, fullerenes, carbon nanotubes (CNTs), and graphene exhibit a rich variety of such phenomena including superconductivity in alkali doped fullerenes [1], quantized transport in SWCNTs, and massless Dirac quasi-particles showing a half integer quantum Hall-effect in graphene even at room temperature [2]. A compelling correlated state of one-dimensional systems is the Luttinger liquid (LL) state. There is now abundant evidence from both theoretical [3,4,5,6,7] and experimental [8,9,10,11] side that the low energy properties of CNTs with a single shell, the single-wall carbon nanotubes (SWCNTs) can be described with the LL state. As a result, SWCNTs are regarded as a model system of the LL state, which could be exploited to further test the theories and novel experimental methods.Electron spin resonance (ESR) is a well established and powerful method to characterize correlated states of itinerant electrons. It helped to resolve e.g. the singlet nature of superconductivity in elemental metals [12], the magnetically ordered spin-density state in lowdimensional organic metals [13] and in alkali doped fullerides [14]. In three-dimensional metals, the ESR signal intensity is proportional to the Pauli spin-susceptibility, the ESR line-width and g-factor are determined by the mixing of spin up and down states due to spin-orbit (SO) coupling in the conduction band. These ESR measurables are affected when correlations are present and thus their study holds information about the nature of the correlated state.This motivated a decade long quest to find the ESR signal of itinerant electrons in SWCNTs and to characterize its properties in the framework of the expected correlations [15,16,17]. Detection of ESR in SWCNTs is also vital for applications as it enables to determine the spinlattice relaxation time, T 1 , which determines the usability for spintronics [18]. However, to our knowledge no conclusive evidence for this observation has been reported. An often cited argument for this anomalous absence of the ESR signal is the large heterogeneity of the system, the lack of crystallinity, and the pr...

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confidence: 99%

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confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

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Electron Spin Resonance Signal of Luttinger Liquids and Single-Wall Carbon Nanotubes

et al. 2008

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“…However, it shows narrow peak-to-peak line width (H pp = 0.46 mT), indicating well delocalisation of polarons along the main-chain of PANI. In the case of the ESR spectrum exhibits asymmetry Dysonian lineshape, observable for graphite and nano-carbons, microwave can not reach inside of the sample due to skin-effect [6]. However, microwave from the ESR percolates inside of the thin layer of PANI in the samples to show the symmetry line shape for the bio-composite samples.…”

Section: International Letters Of Natural Sciences Vol 51mentioning

confidence: 99%

Bio-Interface Polymerisation: Synthesis of Polyaniline on the Marine Algae Surface

Kudo

Goto

2016

ILNS

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Marine algae Gelidium, Grateloupia elliptica Holmes, and Codium fragile are employed for preparation of PANI/seaweed composites. Infrared absorption (IR), electron spin resonance (ESR) spectroscopy measurements are carried out to confirm the resultant structure. The direct use of natural biological materials for polymerisation reaction allows us to production of polymers with characteristic surface. This can be referred to as bio-interface polymerisation.

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Systematic Conductivity Behavior in Conducting Polymers: Effects of Heterogeneous Disorder

Kaiser¹

2001

Adv. Mater.

277

200

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The conduction process in conducting polymers has some unusual features. Even for highly conducting samples, the electronic transport properties show a mixture of metallic and non‐metallic character, which is most easily explained in terms of the heterogeneous morphology of the polymers. The Figure shows the characteristic temperature dependence of conductivity as doping level is increased. A key feature of the conductivity of the organic conducting polymers is its surprisingly large magnitude for materials with low carrier density and considerable disorder. For polyacetylene the inferred conductivity of the highly conducting crystalline regions can be greater than that of copper. However, the temperature dependence of the conductivity shows non‐metallic sign over a wide range of temperatures in virtually all conducting polymers—a change to metallic sign occurs only at higher temperatures and only in some polymers. This behavior is compared and contrasted with that of carbon nanotubes (which can also be regarded as conducting polymers) and of amorphous conventional metals. The measured conductivities of organic polymers and single‐wall carbon nanotube networks are analyzed in terms of a heterogeneous model that gives a good account of the data. The granularity of the superconductivity recently discovered in polythiophene films is also consistent with this heterogeneous model.

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Electron spin resonance and microwave resistivity of single-wall carbon nanotubes

Cited by 96 publications

References 20 publications

Electron Spin Resonance Signal of Luttinger Liquids and Single-Wall Carbon Nanotubes

Electron Spin Resonance Signal of Luttinger Liquids and Single-Wall Carbon Nanotubes

Bio-Interface Polymerisation: Synthesis of Polyaniline on the Marine Algae Surface

Systematic Conductivity Behavior in Conducting Polymers: Effects of Heterogeneous Disorder

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