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

Autor:	Yasuaki Hayafuchi, Ryota Konno, Annisa Noorhidayati, Mohammad Hamzah Fauzi, Naokazu Shibata, Katsushi Hashimoto, Yoshiro Hirayama
Rok vydání:	2022
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Engineering FOS: Physical sciences General Physics and Astronomy
Zdroj:	Applied Physics Express. 15:025002
ISSN:	1882-0786 1882-0778
Popis:	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. 18 pages, 3 figures, including supplementary information with 2 figure
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::180cf725af380414e12bcff9dd6869b6 https://doi.org/10.35848/1882-0786/ac4c35 Zobrazit plný text záznamu