Low-temperature carrier transport in magnetic field in sandwich-like graphene/Co nanoparticles/graphene structure

Low-temperature carrier transport in magnetic field in sandwich-like graphene/Co nanoparticles/graphene structure

The improved analysis of carrier transport in the single-layer graphene and hybrid structures like graphene/Co nanoparticles (NPs) and graphene/Co NPs/graphene has been conducted. The temperature and magnetic field dependences of the sheet resistance RSq (T, B) and/or conductivity σSq (T, В) has sho...

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Veröffentlicht in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2024-01, Vol.155, p.115833, Article 115833
Hauptverfasser: Fedotov, Alexander K., Gumiennik, Uladzislaw E., Fedotova, Julia A., Przewoźnik, Janusz, Kapusta, Czesław
Format: Artikel
Sprache:eng
Schlagworte:
CVD
Graphene
Magnetoresistance
Single layer
Twisted layers
Weak localization
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Zusammenfassung:The improved analysis of carrier transport in the single-layer graphene and hybrid structures like graphene/Co nanoparticles (NPs) and graphene/Co NPs/graphene has been conducted. The temperature and magnetic field dependences of the sheet resistance RSq (T, B) and/or conductivity σSq (T, В) has shown the coexistence of negative (NMR) and positive (PMR) contributions in magnetoresistive effect in all the samples under study. The dependences of RSq (T, B) and/or σSq (T, В) were analyzed in the framework of some combinations of 5 models relating to quantum corrections (QCs) to Drude conductivity theory and different hopping models for variable range hopping (VRH) regimes. It was shown, in particular, that in the region of NMR effect below 75 K and in fields B 
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2023.115833