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Detection of Spin Reversal via Kondo Correlation in Hybrid Carbon Nanotube Quantum Dots

Datta, Subhadeep and Weymann, Ireneusz and Płomińska, Anna and Flahaut, Emmanuel and Marty, Läetitia and Wernsdorfer, Wolfgang Detection of Spin Reversal via Kondo Correlation in Hybrid Carbon Nanotube Quantum Dots. (2019) ACS Nano, 13 (9). 10029-10035. ISSN 1936-0851

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Official URL: https://doi.org/10.1021/acsnano.9b02091

Abstract

We experimentally investigate the electronic transportthrough a double-wall carbon nanotubefilled with Fe nanoparticles. Atvery low temperatures, the Kondo effect is observed between theconfined electrons in the nanotube quantum dot and the delocalizedelectrons in the leads connecting the nanotube. We demonstrate thatthe presence of magnetic nanoparticles in the inner core of thenanotube results in a hysteretic behavior of the differential resistance ofthe system when the magneticfield is varied. This behavior is observedin the Kondo diamonds of the stability diagram, and the magnitude ofhysteresis varies with the strength of the Kondo correlations indifferent diamonds. Ourfindings are corroborated with accurate numerical renormalization group calculations performedfor an effective low-energy model involvingfluctuations of the spin on the orbital level of the nanotube due to spinflips ofthe nanoparticles.

Item Type:Article
HAL Id:hal-02317479
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Indian Association for the Cultivation of Science - IACS (INDIA)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Karlsruhe Institute of Technology - KIT (GERMANY)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Adam Mickiewicz University - AMU (POLAND)
Other partners > Université Joseph Fourier Grenoble 1 - UJF (FRANCE)
Laboratory name:
Funders:
RTRA Nanosciences Foundation - DST-SERB - Agence Nationale de la Recherche (ANR-PNANO) - STEP MolSpinQIP - Polish National Science Centre
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Deposited By: cirimat webmestre
Deposited On:16 Oct 2019 07:59

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