Anomalous quantized plateaus in two-dimensional electron gas with gate confinement

• DOI: 10.48550/arxiv.2207.06701
• Publication Date: 2022-01-01
• Authors: Jiaojie Yan; Yijia Wu; Shuai Yuan; Xiao Liu; L. N. Pfeiffer; K. W. West; Yang Liu; Hailong Fu; Xiaqing Xie; Lin Xi
• Keywords: Condensed Matter - Strongly Correlated Electrons; Condensed Matter - Mesoscale and Nanoscale Physics; Strongly Correlated Electrons (cond-mat.str-el); Science; Q; 0103 physical sciences; Mesoscale and Nanoscale Physics (cond-mat.mes-hall); FOS: Physical sciences; 01 natural sciences; Article

Quantum information can be coded by the topologically protected edges of fractional quantum Hall (FQH) states. Investigation on FQH in hope searching and utilizing non-Abelian statistics has been a focused challenge for years. Manipulating edges, e.g. to bring close each other or separate spatially, is common essential step such studies. The edge structures confined region are typically presupposed same as that open analysis experimental results, but whether they remain unchanged with extra confinement obscure. In this work, we present series unexpected plateaus single-layer two-dimensional electron gas (2DEG), which quantized at anomalous fractions 9/4, 17/11, 16/13 reported 3/2. We explain all assuming surprisingly larger filling factors region. Our findings enrich understanding states applications gate manipulation, crucial experiments point contact interferometer.