Even-denominator fractional quantum Hall state in conventional triple-gated quantum point contact

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) fabr...

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Bibliographic Details
Published inarXiv.org
Main Authors Hayafuchi, Yasuaki, Konno, Ryota, Noorhidayati, Annisa, Fauzi, Mohammad H, Shibata, Naokazu, Hashimoto, Katsushi, Hirayama, Yoshiro
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 01.02.2022
Subjects
Data processing
Electrons
Physics - Mesoscale and Nanoscale Physics
Point contact
Quantum phenomena
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2108.00156