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Magneto-Coulomb Effect in Carbon Nanotube Quantum Dots Filled with Magnetic Nanoparticles

Datta, Subhadeep and Marty, Laëtitia and Cleuziou, Jean-Pierre and Tîlmaciu, Carmen and Soula, Brigitte and Flahaut, Emmanuel and Wernsdorfer, Wolfgang Magneto-Coulomb Effect in Carbon Nanotube Quantum Dots Filled with Magnetic Nanoparticles. (2011) Physical review letters , vol. 107 (n° 18). pp. 186804(1)- 186804(4). ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.107.186804

Abstract

Electrical transport measurements of carbon nanotubes filled with magnetic iron nanoparticles are reported. Low-temperature (40 mK) magnetoresistance measurements showed conductance hysteresis with sharp jumps at the switching fields of the nanoparticles. Depending on the gate voltage, positive or negative hysteresis was observed. The results are explained in terms of a magneto-Coulomb effect: The spin flip of the iron island at a nonzero magnetic field causes a shift of the chemical potential induced by the change of Zeeman energy; i.e., an effective charge variation is detected by the nanotube quantum dot.

Item Type:Article
Additional Information:Thanks to American Physical Society editor. The original version is available at http://www.sciencedirect.com The original PDF of the article can be found at Physical review letters website: http://prl.aps.org/abstract/PRL/v107/i18/e186804
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université Joseph Fourier Grenoble 1 - UJF (FRANCE)
Laboratory name:
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Deposited By: Denis Faragou

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