The even-denominator states have attracted considerable attention owing to their possible applications in future quantum technologies. In this letter, we first report a 3/2 diagonal resistance, indicating the existence of a 3/2 state in a nanometer-sized triple-gated quantum point contact (QPC) fabricated on a high-mobility (not ultra-high-mobility) single-layer two-dimensional (2D) GaAs wafer. The center gate plays a crucial role in realizing the QPC's 3/2 state. Our observation of the 3/2 state using a conventional QPC device, which is a suitable building block for semiconductor quantum devices, paves a new path for the development of semiconductor-based quantum technologies.
@article{arxiv.2108.00156,
title = {Even-denominator fractional quantum Hall state in conventional triple-gated quantum point contact},
author = {Yasuaki Hayafuchi and Ryota Konno and Annisa Noorhidayati and Mohammad H. Fauzi and Naokazu Shibata and Katsushi Hashimoto and Yoshiro Hirayama},
journal= {arXiv preprint arXiv:2108.00156},
year = {2022}
}
Comments
18 pages, 3 figures, including supplementary information with 2 figure