We have measured magnetoresistance of suspended graphene in the Corbino geometry at
magnetic fields up to B= 0.15 T, ie, in a regime uninfluenced by Shubnikov–de Haas …

Competition between liquid and solid states in two-dimensional electron systems is an
intriguing problem in condensed matter physics. We have investigated competing Wigner …

Carbon based nanostructures play an important role in the development of new devices in
order to sustain Moore's law. In this work, taper, fusiform and hourglass shaped structures …

Breakdown of the quantum Hall effect (QHE) is commonly associated with an electric field
approaching the inter-Landau-level (LL) Zener field, the ratio of the Landau gap and the …

The temperature properties of the first excited state (FES) splitting energy (FESSE) of a
strongly-coupled impurity magneto acoustic polaron (IMAP) in monolayer graphene is …

First, I wish to express my deepest gratitude to Professor Kensuke Kobayashi for his
unending guidance and scientific discussions since I belong to his group. I also want to …

This thesis addresses three different phenomena in the DC and GHz electronic transport
properties of ballistic, hBN-encapsulated graphene: Firstly, the total internal reflection of …

In this thesis, sophisticated conductance and noise measurements were employed for
studying electron transport through suspended graphene devices in order to understand the …