Charge transport in multilayer graphene oxide
Prof. Dr. Haldun Sevincli
Department of Materials Science and Engineering, İnstitute of Technology, İzmir

July 8, 2021, 1 p.m.

Charge transport across two-dimensional systems has been widely investigated during the last decade. Still, there are a lot of unexplored features in transport across multilayer disordered systems. Motivated by recent experiments [1], we simulate transport across multilayer strucrtures. We observe that conductance decreases when we deposit additional layers over a clean graphene monolayer. However, in defective graphene oxide the trend is opposite. Moreover, dependece on the number of layers is an unanswered question. Starting with Landauer-Büttiker and Kubo-Greenwood methodologies, we are able to shed light to the experimental results. Using localization theory and Thouless relation, we derive a scaling relation for dependence on the number of layers and obtain a good aggreement with experiment.
[1] Alessandro Kovtun, Andrea Candini, Anna Vianelli, Alex Boschi, Simone Dell’Elce, Marco Gobbi, Kyung Ho Kim, Samuel Lara Avila, Paolo Samorì, Marco Affronte, Andrea Liscio, and Vincenzo Palermo, ACS Nano 15, 2654 (2021)



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Charge transport in multilayer graphene oxide
Prof. Dr. Haldun Sevincli
Department of Materials Science and Engineering, İnstitute of Technology, İzmir

July 8, 2021, 1 p.m.

Charge transport across two-dimensional systems has been widely investigated during the last decade. Still, there are a lot of unexplored features in transport across multilayer disordered systems. Motivated by recent experiments [1], we simulate transport across multilayer strucrtures. We observe that conductance decreases when we deposit additional layers over a clean graphene monolayer. However, in defective graphene oxide the trend is opposite. Moreover, dependece on the number of layers is an unanswered question. Starting with Landauer-Büttiker and Kubo-Greenwood methodologies, we are able to shed light to the experimental results. Using localization theory and Thouless relation, we derive a scaling relation for dependence on the number of layers and obtain a good aggreement with experiment.
[1] Alessandro Kovtun, Andrea Candini, Anna Vianelli, Alex Boschi, Simone Dell’Elce, Marco Gobbi, Kyung Ho Kim, Samuel Lara Avila, Paolo Samorì, Marco Affronte, Andrea Liscio, and Vincenzo Palermo, ACS Nano 15, 2654 (2021)



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