Title :
Well-defined plateaus of the conductance in two-terminal device of nonsuspended graphene
Author :
Kang, Haeyoung ; Kim, Kanghyun ; Woo, Byung-Chill ; Yun, Wan Soo
Author_Institution :
Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea
Abstract :
Quantized conductance, reflecting the half-integer quantum Hall effect in a non-suspended single-layer graphene, was clearly observed in a two-terminal device at 2 K and 8 T, particularly at ±2e2/h and ±6e2/h. Dependence of the conductance quantization upon temperature and the magnetic field strength was systematically investigated. In the case of v = +2, the quantized behavior was discernable even at 180 K. Resistance of Dirac point decreased linearly with decrease of temperature and increases below 20 K, implying the behavior of quantum Hall insulator at high magnetic field.
Keywords :
electrical conductivity; electrical resistivity; graphene; quantum Hall effect; C; Dirac point; half-integer quantum Hall effect; magnetic field strength; magnetic flux density 8 T; nonsuspended single-layer graphene; quantized conductance; quantum Hall insulator; resistance; temperature 2 K; two-terminal device;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2010 10th IEEE Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-7033-4
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2010.5697932