@article{ef6376fd7fcf4a69b09d6d85f69d1719,
title = "3/2 fractional quantum Hall plateau in confined two-dimensional electron gas",
abstract = "Even-denominator fractional quantum Hall (FQH) states, such as 5/2 and 7/2, have been well known in a two-dimensional electron gas (2DEG) for decades and are still investigated as candidates of non-Abelian statistics. In this paper, we present the observation of a 3/2 FQH plateau in a single-layer 2DEG with lateral confinement at a bulk filling factor of 5/3. The 3/2 FQH plateau is quantized at (he2)∕(32) within 0.02\%, and can survive up to 300 mK. This even-denominator FQH plateau may imply intriguing edge structure and excitation in FQH system with lateral confinement. The observations in this work demonstrate that understanding the effect of the lateral confinement on the many-body system is critical in the pursuit of important theoretical proposals involving edge physics, such as the demonstration of non-Abelian statistics and the realization of braiding for fault-tolerant quantum computation.",
author = "Hailong Fu and Yijia Wu and Ruoxi Zhang and Jian Sun and Pujia Shan and Pengjie Wang and Zheyi Zhu and Pfeiffer, \{L. N.\} and West, \{K. W.\} and Haiwen Liu and Xie, \{X. C.\} and Xi Lin",
note = "We thank Rui-Rui Du, Jainendra K. Jain, Hua Jiang, Jie Liu, Yang Liu, Junren Shi, Xin Wan, Ding Zhang, Jun Zhu and Junyi Zhang for discussions. We thank Charles M. Marcus for reminding us of his observation on the 3/2 FQH plateau in Yiming Zhang{\textquoteright}s thesis. The work is supported by the NBRPC (2015CB921100), NSFC (11674009), National Key Research and Development Program of China (2017YFA0303301), NSFC (11534001), the Beijing Natural Science Foundation (JQ18002), the Strategic Priority Research Program of Chinese Academy of Sciences (XDB28000000) and the Fundamental Research Funds for the Central Universities (11534001). H.F. acknowledges the support of the Eberly Postdoc Fellowship at Penn State University. The work at Princeton University was funded by the Gordon and Betty Moore Foundation through the EPiQS initiative Grant GBMF4420, by the National Science Foundation MRSEC Grant DMR-1420541, and by the Keck Foundation.",
year = "2019",
month = dec,
day = "1",
doi = "10.1038/s41467-019-12245-y",
language = "English (US)",
volume = "10",
journal = "Nature communications",
issn = "2041-1723",
publisher = "Nature Research",
number = "1",
}