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Quantum oscillations and ferromagnetic hysteresis observed in iron filled multiwall carbon nanotubes
J Barzola-Quiquia1, N Klingner, J Krüger
1Division of Superconductivity and Magnetism, Institute for Experimental Physics II, University of Leipzig, Leipzig, Germany. j.barzola@physik.uni-leipzig.de
Abstract:
We report on the electrical transport properties of single multiwall carbon nanotubes with and without an iron filling as a function of temperature and magnetic field. For the iron filled nanotubes the magnetoresistance shows a magnetic behavior induced by iron, which can be explained by taking into account a contribution of s-d hybridization. In particular, ferromagnetic-like hysteresis loops were observed up to 50 K for the iron filled multiwall carbon nanotubes. The magnetoresistance shows quantum interference phenomena such as universal conductance fluctuations and weak localization effects.
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