Berlin 2024 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 26: Nanotubes and Nanoribbons
TT 26.5: Talk
Tuesday, March 19, 2024, 10:30–10:45, H 3007
Magnetotransport in iron-filled nanotubes: learning about the properties of iron nanoparticle chains — Subhadeep Datta1, •Magdalena Marganska2, Luca Magazzu2, and Milena Grifoni2 — 1School of Physical Sciences, Indian Association for the Cultivation of Science, Kolkata, India — 2Institute for Theoretical Physics, University of Regensburg, 93053 Regensburg, Germany
Carbon nanotubes, with their hollow cores, are often used to encapsulate smaller molecules and nanoparticles. The properties of the smaller system can then be studied through their influence on the carbon nanotube behaviour. We present the results of an experiment measuring magnetotransport in quantum dots created from carbon nanotubes filled with iron/iron oxide nanoparticles. We observe the signatures of the magneto-Coulomb effect and hybridization between the electronic states of iron and of the nanotube dependent on the gate voltage. From the hysteretic behaviour of the conductance we extract the possible magnetization curves of the iron nanoparticles, identifying the ferromagnetic nature of their interactions.