Gate-tunable subband degeneracy in semiconductor nanowires

Wang, Yuhao1; Song, Wenyu1; Cao, Zhan2; Yu, Zehao1; Yang, Shuai1; Li, Zonglin1; Gao, Yichun1; Li, Ruidong1; Chen, Fangting1; Geng, Zuhan1; Yang, Lining1; Xu, Jiaye1; Wang, Zhaoyu1; Zhang, Shan1; Feng, Xiao1,2,3,4; Wang, Tiantian2,4; Zang, Yunyi2,4; Li, Lin2; Shang, Runan2,4; Xue, Qi-Kun1,2,3,4,5; Liu, Dong E.1,2,3,4; He, Ke1,2,3,4; Zhang, Hao1,2,3

2024-07-02

10.1073/pnas.2406884121

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA   影响因子和分区

0027-8424

1091-6490

Degeneracy and symmetry have a profound relation in quantum systems. Here, we report gate -tunable subband degeneracy in PbTe nanowires with a nearly symmetric cross-sectional shape. The degeneracy is revealed in electron transport by the absence of a quantized plateau. Utilizing a dual gate design, we can apply an electric field to lift the degeneracy, reflected as emergence of the plateau. This degeneracy and its tunable lifting were challenging to observe in previous nanowire experiments, possibly due to disorder. Numerical simulations can qualitatively capture our observation, shedding light on device parameters for future applications.

semiconductor nanowires degeneracy symmetry

SCI

英语

其他

National Natural Science Foundation of China["92065206,12374158","12074039"] ; Innovation Program for Quantum Science and Technology[2021ZD0302400]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001263143300003

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BIOLOGY & BIOCHEMISTRY ; CLINICAL MEDICINE ; MULTIDISCIPLINARY ; PLANT & ANIMAL SCIENCE ; ENVIRONMENT/ECOLOGY ; SOCIAL SCIENCES, GENERAL ; MICROBIOLOGY ; ECONOMICS BUSINESS ; IMMUNOLOGY ; MATERIALS SCIENCE ; MATHEMATICS ; SPACE SCIENCE ; MOLECULAR BIOLOGY & GENETICS ; PHARMACOLOGY & TOXICOLOGY ; CHEMISTRY ; PSYCHIATRY/PSYCHOLOGY ; NEUROSCIENCE & BEHAVIOR ; PHYSICS ; GEOSCIENCES ; AGRICULTURAL SCIENCES ; ENGINEERING

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1.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
2.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
3.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China
4.Hefei Natl Lab, Hefei 230088, Peoples R China
5.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Wang, Yuhao,Song, Wenyu,Cao, Zhan,et al. Gate-tunable subband degeneracy in semiconductor nanowires[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2024,121(27).

Wang, Yuhao.,Song, Wenyu.,Cao, Zhan.,Yu, Zehao.,Yang, Shuai.,...&Zhang, Hao.(2024).Gate-tunable subband degeneracy in semiconductor nanowires.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(27).

Wang, Yuhao,et al."Gate-tunable subband degeneracy in semiconductor nanowires".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.27(2024).