Disentanglement of the electronic properties of metallicity-selected single-walled carbon nanotubes

Ayala, Paola; Miyata, Yasumitsu; Blauwe, Katrien De; Shiozawa, Hidetsugu; Feng, Yu; Yanagi, Kazuhiro; Kramberger, Christian; Silva, S. Ravi P.; Follath, R.; Kataura, Hiromichi; Pichler, Thomas

doi:10.1103/physrevb.80.205427

Cited by 76 publications

(128 citation statements)

References 28 publications

Supporting

Mentioning

113

Contrasting

Order By: Relevance

“…In any case, we find a good agreement regarding the fine structures, which have a long lifetime yielding sharp and distinct peaks on the XAS response perpendicular to the tube axis and on the other hand to the broad π * resonance along the tube axis having a strong lifetime broadening like in graphite. This is in good agreement with the two fold XAS response we observed in our previous experimental report [8] where we attributed this fine structure to the molecular like response of the vHs of the corresponding SWCNTs which are polarized perpendicular to the tube axis. The overall shape of the C1s π * peak shows close similarities to the π * resonance of bulk sp 2 carbon in graphite or graphene.…”

Section: Resultssupporting

confidence: 93%

“…In Ref. [8] we proved, by using the metallicity sorted SWCNT with a mean diameter of 13.7Å, that this fine structure is related to the vHs of the individual SWCNTs. In that contribution we used diameter cumulative TB calculations of the electronic structure, and found a perfect match to the experimental spectra.…”

Section: Resultsmentioning

confidence: 91%

“…We have performed our experiments with films with a characteristic narrow Gaussian diameter distribution centered at 13.7Å with a spread of 0.8Å [14]. The quality of these samples is backed up by photoemission studies described in reference [8], where the disentanglement of the van Hove singularities (vHs) of metallic and semiconducting nanotubes were reported. There, the vHs associated to specific types of tubes were approximated by a simple diameter cumulative tight binding calculation to estimate their relative positions for tubes corresponding to the same diameter range.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Computing C1<I>s</I> X-ray Absorption for Single-Walled Carbon Nanotubes with Distinct Electronic Type

Mowbray¹,

Ayala²,

Pichler³

et al. 2011

Mat Express

View full text Add to dashboard Cite

The experimental data recorded for the C1s edge in X-ray absorption spectroscopy (XAS) for graphite, graphene and nanotubes, have consistently exhibited certain discrepancies when compared with theoretical calculations. A theoretical approach to estimate the energy scale normalization for the C1s shape in X-ray absorption is presented within the time dependent density functional theory and random phase approximation framework employing the loss function. The position of the σ resonance is fairly localized whereas core hole effects must be envisaged in order to have an agreement with the delocalization of the π * resonance, which is displaced by ∼2 eV. Here we report a combined experimental and theoretical approach to identify the electronic conduction band of single walled carbon nanotubes using XAS, taking into account their metallic character.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Computing C1<I>s</I> X-ray Absorption for Single-Walled Carbon Nanotubes with Distinct Electronic Type

Mowbray¹,

Ayala²,

Pichler³

et al. 2011

Mat Express

View full text Add to dashboard Cite

show abstract

“…More recently, it has emerged as a particularly useful probe for low-dimensional carbon-based nanomaterials such as carbon fibers 1 , thin films 2 , nanotubes 3,4 , and graphene 5,6 . Measured binding energies are often compared to molecular reference values to identify the corresponding atomic structures.…”

mentioning

confidence: 99%

Calculation of the graphene C1score level binding energy

et al. 2015

View full text Add to dashboard Cite

X-ray photoelectron spectroscopy (XPS) combined with first principles modeling is a powerful tool for determining the chemical composition and electronic structure of novel materials. Of these, graphene is an especially important model system for understanding the properties of other carbon nanomaterials. Here, we calculate the carbon 1s core level binding energy of pristine graphene using two methods based on density functional theory total energy differences: a calculation with an explicit core-hole (∆KS), and a novel all-electron extension of the delta self-consistent field (∆SCF) method. We study systematically their convergence and computational workload, and the dependence of the energies on the chosen exchange-correlation functional. The ∆SCF method is computationally more expensive, but gives consistently higher C 1s binding energies. Although there is a significant functional dependence, the binding energy calculated using the PBE functional is found to be remarkably close to what has been measured for graphite.

show abstract

“…20, 21 Ayala et al concluded that the interaction between different metallic SWCNTs within a bundle of only metallic SWCNTs is small enough to stabilize a TLL state. 22 The results of transport experiments in isolated and bundled SWCNTs can also be interpreted in terms of a TLL state, [23][24][25] although there remain difficulties in interpreting the role of the contacts. Thus, the effect of bundling on the one-dimensional electronic state in SWCNTs remains elusive.…”

Section: Introductionmentioning

confidence: 99%

Intertube effects on one-dimensional correlated state of metallic single-wall carbon nanotubes probed by C13 NMR

et al. 2017

View full text Add to dashboard Cite

The electronic states in isolated single-wall carbon nanotubes (SWCNTs) have been considered as an ideal realization of a Tomonaga-Luttinger liquid (TLL). However, it remains unclear whether one-dimensional correlated states are realized under local environmental effects such as the formation of a bundle structure. Intertube effects originating from other adjacent SWCNTs within a bundle may drastically alter the one-dimensional correlated state. In order to test the validity of the TLL model in bundled SWCNTs, low-energy spin excitation is investigated by nuclear magnetic resonance (NMR). The NMR relaxation rate in bundled mixtures of metallic and semiconducting SWCNTs shows a power-law temperature dependence with a theoretically predicted exponent. This demonstrates that a TLL state with the same strength as that for effective Coulomb interactions is realized in a bundled sample, as in isolated SWCNTs. In bundled metallic SWCNTs, we found a power-law temperature dependence of the relaxation rate, but the magnitude of the relaxation rate is one order of magnitude smaller than that predicted by theory. Furthermore, we found an almost doubled magnitude of the Luttinger parameter. These results indicate suppressed spin excitations with reduced Coulomb interactions in bundled metallic SWCNTs, which are attributable to intertube interactions originating from adjacent metallic SWCNTs within a bundle. Our findings give direct evidence that bundling reduces the effective Coulomb interactions via intertube interactions within bundled metallic SWCNTs.

show abstract

Disentanglement of the electronic properties of metallicity-selected single-walled carbon nanotubes

Cited by 76 publications

References 28 publications

Computing C1<I>s</I> X-ray Absorption for Single-Walled Carbon Nanotubes with Distinct Electronic Type

Computing C1<I>s</I> X-ray Absorption for Single-Walled Carbon Nanotubes with Distinct Electronic Type

Calculation of the graphene C1score level binding energy

Intertube effects on one-dimensional correlated state of metallic single-wall carbon nanotubes probed by C13 NMR

Contact Info

Product

Resources

About