Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session C42: Electronic and Thermal Transport Properties of Graphene
3:00 PM–5:48 PM,
Monday, March 15, 2021
Sponsoring
Unit:
DCMP
Chair: Di Chen, Peking University
Abstract: C42.00013 : Open quantum dot in encapsulated graphene*
5:24 PM–5:36 PM
On Demand
Presenter:
Kohei Sakanashi
(Department of Materials Science, Chiba University)
Authors:
Kohei Sakanashi
(Department of Materials Science, Chiba University)
Naoto Wada
(Department of Materials Science, Chiba University)
Kenji Watanabe
(Advanced Materials Laboratory, NIMS)
Takashi Taniguchi
(Advanced Materials Laboratory, NIMS)
Gil-ho Kim
(SAINT, Sungkyunkwan University)
David K Ferry
(School of Electrical, Computer and Energy Engineering, Arizona State University)
Jonathan P Bird
(Department of Electrical Engineering, State Univ of NY - Buffalo)
Liang Huang
(School of Physical Science and Technology, Lanzhou University)
Nobuyuki Aoki
(Department of Materials Science, Chiba University)
In this study, we realized the high-quality etch-defined GOQD in hBN-encapsulated monolayer graphene by using the PC-polymer based dry-transfer and one-dimensional edge contact techniques. Our GOQD has the dimension of 400 nm length and width which is strongly coupled with the outer reservoirs by 200 nm width constrictions. We observed the conductance oscillatory behavior under zero and finite small magnetic field at low temperatures. Those conductance oscillations come from formation of discrete energy levels refecting einselection and classical electron trajectory in the GOQD cavity.
*This work was supported by JSPS KAKENHI Grant No. 18H01812 and 20J20052.
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