期刊
PHYSICAL REVIEW LETTERS
卷 106, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.046801
关键词
-
资金
- DOE [DE-FG02-05ER46215]
- U.S. Department of Energy (DOE) [DE-FG02-05ER46215] Funding Source: U.S. Department of Energy (DOE)
We report on magnetotransport measurements of multiterminal suspended graphene devices. Fully developed integer quantum Hall states appear in magnetic fields as low as 2 T. At higher fields the formation of longitudinal resistance minima and transverse resistance plateaus are seen corresponding to fractional quantum Hall states, most strongly for nu = 1/3. By measuring the temperature dependence of these resistance minima, the energy gap for the 1/3 fractional state in graphene is determined to be at similar to 20 K at 14 T.
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