TY - JOUR
T1 - Observation of fractional quantum Hall effect in an InAs quantum well
AU - Ma, Meng K.
AU - Hossain, Md Shafayat
AU - Villegas Rosales, K. A.
AU - Deng, H.
AU - Tschirky, T.
AU - Wegscheider, W.
AU - Shayegan, M.
N1 - Funding Information:
We acknowledge support from the NSF Grants No. ECCS 1508925, No. DMR 1305691, and No. DMR 1709076. Our research was also funded in part by QuantEmX grants from ICAM and the Gordon and Betty Moore Foundation through Grant No. GBMF5305 to M.K.M., Md.S.H., and M.S. Our measurements were partly performed at the National High Magnetic Field Laboratory (NHMFL), which is supported by the NSF Cooperative Agreement No. DMR 1157490, by the State of Florida, and by the DOE. We thank T. Murphy, J. H. Park, H. Baek, and G. E. Jones at NHMFL for technical assistance, and Javad Shabani for illuminating discussions.
Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/12/4
Y1 - 2017/12/4
N2 - The two-dimensional electron system in an InAs quantum well has emerged as a prime candidate for hosting exotic quasiparticles with non-Abelian statistics such as Majorana fermions and parafermions. To attain its full promise, however, the electron system has to be clean enough to exhibit electron-electron interaction phenomena. Here, we report the observation of the fractional quantum Hall effect in a very low disorder InAs quantum well with a well width of 24 nm, containing a two-dimensional electron system with a density n=7.8×1011cm-2 and low-temperature mobility 1.8×106cm2/Vs. At a temperature of ≃35 mK and B≃24 T, we observe a deep minimum in the longitudinal resistance, accompanied by a nearly quantized Hall plateau at a Landau level filling factor ν=4/3.
AB - The two-dimensional electron system in an InAs quantum well has emerged as a prime candidate for hosting exotic quasiparticles with non-Abelian statistics such as Majorana fermions and parafermions. To attain its full promise, however, the electron system has to be clean enough to exhibit electron-electron interaction phenomena. Here, we report the observation of the fractional quantum Hall effect in a very low disorder InAs quantum well with a well width of 24 nm, containing a two-dimensional electron system with a density n=7.8×1011cm-2 and low-temperature mobility 1.8×106cm2/Vs. At a temperature of ≃35 mK and B≃24 T, we observe a deep minimum in the longitudinal resistance, accompanied by a nearly quantized Hall plateau at a Landau level filling factor ν=4/3.
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U2 - 10.1103/PhysRevB.96.241301
DO - 10.1103/PhysRevB.96.241301
M3 - Article
AN - SCOPUS:85039440015
SN - 2469-9950
VL - 96
JO - Physical Review B
JF - Physical Review B
IS - 24
M1 - 241301
ER -