Superconducting properties of carbon nanotubes

Ferrier, M.; Kasumov, A.; Deblock, R.; Guéron, S.; Bouchiat, H.

doi:10.1016/j.crhy.2009.04.004

Cited by 13 publications

(16 citation statements)

References 84 publications

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“…In nearly metallic carbon nanotubes, magnetic fields of several teslas close the bandgap. An example of the field dependencies of the lowest electron and the highest hole states of the nanotube C (33,30) is presented in Figure 8a. The fields at which the bandgap closes are called Dirac fields.…”

Section: Resultsmentioning

confidence: 99%

“…In CNTQDs, parallel magnetic fields do not close the bandgap due to a finite confinement energy. Figure 8b shows the field dependencies of four states from the lowest electron shell and four states from the highest hole shell of the quantum dot CNTQD (33,30). No crossing of the electron line with the hole line is observed for any value of the parallel magnetic field (θ = 0°).…”

Section: Resultsmentioning

confidence: 99%

“…Although we discuss in the following many-body resonances only for the specific example of CNTQD (33,30), the analysis and conclusions presented below apply to all dots formed in nearly metallic nanotubes. Figure 8c,d shows the field dependencies of electron and hole energies for θ = 86°, θ = 89°, and, in the inset of Figure 8d, additionally for θ = 90°.…”

Section: Resultsmentioning

confidence: 99%

“…Their study allows for the examination of many basic properties in ranges often not reachable in other systems. Many of the fundamental transport properties were observed in nanotubes, including Coulomb blockade [12,13], Fabry-Perot interference [13,14], Kondo physics [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29], spintronic effects [10,[30][31][32], and induced superconductivity [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

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Kondo effects in small-bandgap carbon nanotube quantum dots

Florków

Krychowski

Lipiński

2020

Beilstein J. Nanotechnol.

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We study the magnetoconductance of small-bandgap carbon nanotube quantum dots in the presence of spin–orbit coupling in the strong-correlations regime. A finite-U slave-boson mean-field approach is used to study many-body effects. Different degeneracies are restored in a magnetic field and Kondo effects of different symmetries arise, including SU(3) effects of different types. Full spin–orbital degeneracy might be recovered at zero field and, correspondingly, the SU(4) Kondo effect sets in. We point out the possibility of the occurrence of electron–hole Kondo effects in slanting magnetic fields, which we predict to occur in magnetic fields with an orientation close to perpendicular. When the field approaches a transverse orientation a crossover from SU(2) or SU(3) symmetry into SU(4) is observed.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kondo effects in small-bandgap carbon nanotube quantum dots

Florków

Krychowski

Lipiński

2020

Beilstein J. Nanotechnol.

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“…Adopting the similar treatment method to silver nanoparticles, the dispersion solution of CNTs with the outer diameter of approximate 7 nm and the purity of 95%, was diluted with ethanol absolute according to the volume ratio of 1 : 1000. In addition, based on the researches about excellent electrical property of carbon nanotubes, [45][46][47][48] using the molecular dynamics simulation method, CNTs can be well connected with high heating temperature and long heating time, which was studied in our previous reports. In addition, the above dispersion solution of silver nanoparticles was diluted and dispersed with ethanol absolute according to the volume ratio of 1 : 5, and then the initial CNTs dispersion sample and silver nanoparticles dispersion solution were mixed in a volume ratio of 1 : 1.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Nanospot welding of carbon nanotubes using near-field enhancement effect of AFM probe irradiated by optical fiber probe laser

et al. 2015

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The miniaturization of electronic devices into the nanometer scale is indispensable for next-generation semiconductor technology, and carbon nanotubes are considered to be the promising candidates for the future interconnection wires. To study carbon nanotube interconnection during nanowelding, we propose a new nanospot welding method with the near-field enhancement effect of the metallic AFM probe tip irradiated by an optical fiber probe laser. Based on theoretically analyzing the near-field enhancement effect, we set up the experimental system for nanospot welding with good interconnection results of silver nanoparticles and carbon nanotubes, not only proving that the interconnection operation of CNTs can be effectively achieved through the melting process of nanoparticles by the thermal AFM probe tip irradiated by an optical fiber probe laser, but also providing a promising technical approach for nanospot welding.

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Carbon‐Nanotube‐Templated, Sputter‐Deposited, Flexible Superconducting NbN Nanowire Yarns

Kim

Kang

Lee

et al. 2017

Adv Funct Materials

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Flexible superconducting yarns consisting of sputter‐deposited NbN nanowires on highly aligned carbon nanotube (CNT) array sheets are reported. In the microscopic view, the NbN nanowires are formed on top of individual CNT fibrils, and the superconductivity property of the twist‐spun NbN–CNT yarn system is comparable to that of a typical NbN thin film on a normal solid substrate. Because of its intrinsic porosity, the system exhibits superior mechanical flexibility with a small bending radius. It also remains a superconducting state even when subjected to severe mechanical deformations, primarily due to the proximity superconductivity through carbon nanotube bundles. The results demonstrate the possibility of fabricating flexible superconducting yarns in a conventional thin‐film deposition process, using ultraflexible free‐standing CNT sheets as a template. In addition, preliminary tests on reducing the normal‐state resistance toward superconducting cable applications are presented.

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Superconducting properties of carbon nanotubes

Cited by 13 publications

References 84 publications

Kondo effects in small-bandgap carbon nanotube quantum dots

Kondo effects in small-bandgap carbon nanotube quantum dots

Nanospot welding of carbon nanotubes using near-field enhancement effect of AFM probe irradiated by optical fiber probe laser

Carbon‐Nanotube‐Templated, Sputter‐Deposited, Flexible Superconducting NbN Nanowire Yarns

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