Interaction driven quantum Hall effect in artificially stacked graphene bilayers.
The honeycomb lattice structure of graphene gives rise to its exceptional electronic properties of linear dispersion relation and its chiral nature of charge carriers. The exceptional electronic properties of graphene stem from linear dispersion relation and chiral nature of charge carries, originating from its honeycomb lattice structure. Here, we address the quantum Hall effect in artificially stacked graphene bilayers and single layer graphene grown by chemical vapor deposition. The quantum Hall plateaus started to appear more than 3 T and became clearer at higher magnetic fields up to 9 T. Shubnikov-de Hass oscillations were manifestly observed in graphene bilayers texture. These unusual plateaus may have been due to the layers interaction in artificially stacked graphene bilayers. Our study initiates the understanding of interactions between artificially stacked graphene layers.
Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi 23640, Khyber Pakhtunkhwa, Pakistan.|Department of Physics &Graphene Research Institute, Sejong University, Seoul 143-747, Korea.|Department of Physics &Astronomy, Georgia State University, Atlanta, GA 30303, USA.
Muhammad Zahir
MZ
Iqbal
Department of Physics &Graphene Research Institute, Sejong University, Seoul 143-747, Korea.|Department of Physics, College of Science, Majmaah University, Al-Zulfi 11932, Saudi Arabia.
Muhammad Waqas
MW
Iqbal
Department of Bioscience &Biotechnology, Sejong University, Seoul 143-747, Korea.
Salma
S
Siddique
Department of Physics &Graphene Research Institute, Sejong University, Seoul 143-747, Korea.
Muhammad Farooq
MF
Khan
Physics &Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Shahid Mahmood
SM
Ramay
Department of Physics &Graphene Research Institute, Sejong University, Seoul 143-747, Korea.
Jungtae
J
Nam
Department of Physics &Graphene Research Institute, Sejong University, Seoul 143-747, Korea.
Keun Soo
KS
Kim
Department of Physics &Graphene Research Institute, Sejong University, Seoul 143-747, Korea.
Jonghwa
J
Eom