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arXiv · 0808.1862

Observation of half-integer quantum Hall effect in single-layer graphene using pulse magnet

Satoru Masubuchi·Ken-ichi Suga·Masashi Ono·Koichi Kindo·Shojiro Takeyama·Tomoki Machida
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Abstract

We report magnetotransport measurements on a single-layer graphene in pulsed magnetic fields up to $B$ = 53 T. With either electron- or hole-type charge carriers, the Hall resistance $R_{H}$ is quantized into $R_{H}$ = $(h/e^2)ν^{-1}$ with $ν$ = $\pm$2, $\pm$6, and $\pm$10, which demonstrates the observation of half-integer quantum Hall effect (QHE). At $B$ = 50 T, the half-integer QHE is even observed at room temperature in spite of a conventional carrier mobility $μ$ = 4000 cm$^2$/Vs.

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Satoru Masubuchi, Ken-ichi Suga, Masashi Ono, Koichi Kindo, Shojiro Takeyama, Tomoki Machida. 2008-10-09. Observation of half-integer quantum Hall effect in single-layer graphene using pulse magnet. https://doi.org/10.1143/jpsj.77.113707

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