Výsledky vyhledávání - "Siphephile Ncube"

Akademický článek

Tuning Magnetic Properties of a Carbon Nanotube-Lanthanide Hybrid Molecular Complex through Controlled Functionalization

Autor: Ibwanga S. Mosse, Venkateswara Rao Sodisetti, Christopher Coleman, Siphephile Ncube, Alvaro S. de Sousa, Rudolph M. Erasmus, Emmanuel Flahaut, Thomas Blon, Benjamin Lassagne, Tomas Šamořil, Somnath Bhattacharyya

Publikováno v: Molecules, Vol 26, Iss 3, p 563 (2021)

Molecular magnets attached to carbon nanotubes (CNT) are being studied as potential candidates for developing spintronic and quantum technologies. However, the functionalization routes used to develop these hybrid systems can drastically affect their

Externí odkaz: https://doaj.org/article/b55ca62bf1d84328bc73051ef800815a

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Strong spin–phonon coupling in Gd-filled nanotubes

Autor: V. R. Sodisetti, Emmanuel Flahaut, Rudolph M. Erasmus, Siphephile Ncube, Christopher Coleman, Somnath Bhattacharyya

To develop one-dimensional spintronic devices, we synthesize Gd-filled double-walled carbon nanotubes where the long spin-coherence time of a paramagnetic gadolinium (Gd3+) ion and the discrete phonon modes of a carbon nanotube can be combined. Here,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::633fd744eeebedd58952723bd3010eb4
https://oatao.univ-toulouse.fr/28607/

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Observation of a superparamagnetic breakdown in gadolinium chloride filled double-walled carbon nanotubes

Autor: Emmanuel Flahaut, Siphephile Ncube, Somnath Bhattacharyya, A. R. E. Prinsloo, Christopher Coleman, C. J. Sheppard

Publikováno v: AIP Advances
AIP Advances, American Institute of Physics-AIP Publishing LLC, 2021, 11 (3), pp.035206. ⟨10.1063/9.0000128⟩
AIP Advances, Vol 11, Iss 3, Pp 035206-035206-4 (2021)

International audience; In this article, the magnetic properties of gadolinium chloride-filled double-walled carbon nanotubes (GdCl3@DWNTs) in the temperature range 2-300 K are explored. The temperature-dependent phonon frequencies of the G-band were

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e226c10b83eb05c0bb1361299b070310
https://oatao.univ-toulouse.fr/27517/

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Bottom-up nano-integration route for modified carbon nanotube spintronic device fabrication

Autor: Svetlana von Gratowski, Ibwanga Sav Mosse, A. V. Irzhak, Christopher Coleman, Siphephile Ncube, A. S. de Sousa, Somnath Bhattacharyya, Victor Koledov

Publikováno v: Journal of Physics: Conference Series. 1461:012015

This study is focused on a bottom-up nano-integration route for the production of carbon based spintronic devices. In order to enhance magnetic interactions along nanotube walls a controlled synthetic chemical technique is utilized, this method is ba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::092a0d2a11bf2f858b247ae412549c31
https://doi.org/10.1088/1742-6596/1461/1/012015

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Bottom-Up Nanointegration Technique for Novel Functionalized Carbon Nanotube and Multi-layer Graphene Device Fabrication

Autor: Victor Koledov, Ibwanga Sav Mosse, Somnath Bhattacharyya, Siphephile Ncube, Christopher Coleman, Svetlana von Gratowski, A. V. Irzhak, Alvaro S. de Sousa

Publikováno v: 2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO).

This study is devoted to the creation and characterization of nano-electronic devices fabricated from bundles of functionalized carbon nanotubes as well as multilayer graphene. The fabrication technique focuses on nanointegration utilizing a nano-twe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4c1aeb7e80a991b9a6592d12529e268
https://doi.org/10.1109/3m-nano.2018.8552242

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Observation of strong Kondo like features and co-tunnelling in superparamagnetic GdCl3 filled 1D nanomagnets

Autor: C. Nie, Somnath Bhattacharyya, Christopher Coleman, Siphephile Ncube, Pierre Lonchambon, Emmanuel Flahaut, André M. Strydom, A. S. de Sousa

Publikováno v: Journal of Applied Physics
Journal of Applied Physics, American Institute of Physics, 2018, vol. 123 (n° 21), pp. 213901/1-213901/7. 〈10.1063/1.5024346〉
Journal of Applied Physics, American Institute of Physics, 2018, vol. 123 (n° 21), pp. 213901/1-213901/7. ⟨10.1063/1.5024346⟩

International audience; Filling of carbon nanotubes has been tailored over years to modify the exceptional properties of the 1-dimensional conductor for magnetic property based applications. Hence, such a system exploits the spin and charge property

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d0c8678a03acf93bad7b1994c6bd53a
https://hal.archives-ouvertes.fr/hal-01812545/file/Ncube_20137.pdf

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Kondo effect and enhanced magnetic properties in gadolinium functionalized carbon nanotube supramolecular complex

Autor: André M. Strydom, A. S. de Sousa, Emmanuel Flahaut, Somnath Bhattacharyya, Christopher Coleman, Siphephile Ncube

Publikováno v: Scientific Reports
Scientific Reports, Nature Publishing Group, 2018, vol. 8 (n° 8057), pp. 1-9. ⟨10.1038/s41598-018-26428-y⟩
Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)

We report on the enhancement of magnetic properties of multiwalled carbon nanotubes (MWNTs) functionalized with a gadolinium based supramolecular complex. By employing a newly developed synthesis technique we find that the functionalization method of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be6362e087bf5a1e146910230881f839
http://europepmc.org/articles/PMC5966395

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Nanomanipulation device fabrication: multilayerd graphene and OFET devices

Autor: Demetrius C. Levendis, C. Botha, Somnath Bhattacharyya, Christopher Coleman, Manuel A. Fernandes, Sanaz Khorasani, C. Sandrock, Davie Mtsuko, Siphephile Ncube

Publikováno v: SPIE Proceedings.

We utilize nano-manipulting probes for the fabrication of a range of devices including multilayered graphene coplanar waveguides, suspended multilayered graphene hall bars and air-gap single crystal organic field effect transistors. We find that devi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d74ed30c0606a79d605504fbefb459ca
https://doi.org/10.1117/12.2245446

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Low temperature magneto transport features of rare earth element functionalized carbon nanotube network devices for spintronic applications

Autor: Alvaro de Souza, Somnath Bhattacharyya, Amy Naicker, Christopher Coleman, Siphephile Ncube, André M. Strydom, Emmanuel Flahaut

Publikováno v: SPIE Proceedings.

In this paper we report on the fabrication of a spintronic device based on multiwalled carbon nanotubes functionalized/coupled with a rare earth element complex. The spin valve behavior is verified by magneto-resistance fluctuations at low temperatur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53b9b1de801183bbbcd745f6c3cd347d
https://doi.org/10.1117/12.2245405

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Observation of impedance oscillations in single walled carbon nanotube bundles excited by high frequency signals

Autor: George Chimowa, Siphephile Ncube, Somnath Bhattacharyya

We report experimental observation of impedance oscillations in single-walled carbon nanotubes measured from 100 MHz to 65 GHz on coplanar wave guides and a power law dependence of the differential conductance with bias voltage. From the crossover of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6ec450e7b35233d2bee8c5216f5a190
http://arxiv.org/abs/1504.02601

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