Observation of Coulomb blockade and ballistic tunneling in graphene single electron transistor

Observation of Coulomb blockade and ballistic tunneling in graphene single electron transistor

A square graphene single electron transistor （SET） was defined with two side gates, and its transport was studied at low temperature at T = 2 K. At zero magnetic field, Coulomb blockade oscillations were clearly observed near the Dirac point of this device. At high magnetic field, in the quantum Hal...

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Veröffentlicht in:Science China. Physics, mechanics & astronomy mechanics & astronomy, 2012, Vol.55 (1), p.7-10
Hauptverfasser: Tan, ZhenBing, Liu, GuangTong, Lu, Li, Yang, ChangLi
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Classical and Continuum Physics
Graphene
Low temperature
Magnetic fields
Observations and Techniques
Physics
Physics and Astronomy
SET
Single-electron transistors
单电子晶体管
封锁
库仑阻塞
弹道导弹
石墨
隧道
领导干部
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Beschreibung
Zusammenfassung:A square graphene single electron transistor （SET） was defined with two side gates, and its transport was studied at low temperature at T = 2 K. At zero magnetic field, Coulomb blockade oscillations were clearly observed near the Dirac point of this device. At high magnetic field, in the quantum Hall regime, we observed ballistic tunneling of the carders through the graphene SET, contrary to the Coulomb blockades observed while approaching the vicinity of the Dirac point.
ISSN:1674-7348
1869-1927
DOI:10.1007/s11433-011-4578-4