Nondegenerate Integer Quantum Hall Effect from Topological Surface States in Ag2Te Nanoplates
文献类型：期刊论文
| 作者 | Leng, Pengliang6,7,8; Qian, Yingcai5; Cao, Xiangyu6,7,8; Joseph, Nesta Benno4; Zhang, Yuda6,7,8; Banerjee, Ayan4; Li, Zihan7,8; Liu, Fengshuo7,8; Jia, Zehao6,7,8; Ai, Linfeng6,7,8 |
| 刊名 | NANO LETTERS
 |
| 出版日期 | 2023-09-28 |
| 卷号 | 23 |
| ISSN号 | 1530-6984 |
| 关键词 | topological insulators quantum Hall effect structure inversion asymmetry monoclinic Ag2Te nanoplates nondegeneratesurface state |
| DOI | 10.1021/acs.nanolett.3c02703 |
| 通讯作者 | Xiu, Faxian(Faxian@fudan.edu.cn) |
| 英文摘要 | The quantum Hall effect is one of the exclusive properties displayed by Dirac Fermions in topological insulators, which propagates along the chiral edge state and gives rise to quantized electron transport. However, the quantum Hall effect formed by the nondegenerate Dirac surface states has been elusive so far. Here, we demonstrate the nondegenerate integer quantum Hall effect from the topological surface states in three-dimensional (3D) topological insulator beta-Ag2Te nanostructures. Surface-state dominant conductance renders quantum Hall conductance plateaus with a step of e(2)/h, along with typical thermopower behaviors of two-dimensional (2D) massless Dirac electrons. The 2D nature of the topological surface states is proven by the electrical and thermal transport responses under tilted magnetic fields. Moreover, the degeneracy of the surface states is removed by structure inversion asymmetry (SIA). The evidenced SIA-induced nondegenerate integer quantum Hall effect in low-symmetry beta-Ag2Te has implications for both fundamental study and the realization of topological magneto-electric effects. |
| WOS关键词 | LARGE MAGNETORESISTANCE ; TRANSPORT |
| 资助项目 | National Natural Science Foundation of China[11934005] ; National Natural Science Foundation of China[52225207] ; National Natural Science Foundation of China[52350001] ; National Natural Science Foundation of China[12122411] ; Shanghai Pilot Program for Basic Research - Fudan University[21TQ1400100] ; Shanghai Pilot Program for Basic Research - Fudan University[21TQ006] ; National Key R&D Program of the MOST of China[2022YFA1602603] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20180059] ; Prime Minister's Research Fellowship (PMRF) ; Indian Institute of Science[SG/ MHRD-19-0001] ; DST-SERB[SRG/2020/000153] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:001074988500001 |
| 资助机构 | National Natural Science Foundation of China ; Shanghai Pilot Program for Basic Research - Fudan University ; National Key R&D Program of the MOST of China ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Prime Minister's Research Fellowship (PMRF) ; Indian Institute of Science ; DST-SERB |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/132619]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Xiu, Faxian |
| 作者单位 | 1.Shanghai Res Ctr Quantum Sci, Shanghai 201315, Peoples R China 2.Fudan Univ, Zhangjiang Fudan Int Innovat Ctr, Shanghai 201210, Peoples R China 3.Fudan Univ, Inst Nanoelect Devices & Quantum Comp, Shanghai 200433, Peoples R China 4.Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, India 5.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China 6.Shanghai Qi Zhi Inst, Shanghai 200232, Peoples R China 7.Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China 8.Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China |
| 推荐引用方式 GB/T 7714 | Leng, Pengliang,Qian, Yingcai,Cao, Xiangyu,et al. Nondegenerate Integer Quantum Hall Effect from Topological Surface States in Ag2Te Nanoplates[J]. NANO LETTERS,2023,23. |
| APA | Leng, Pengliang.,Qian, Yingcai.,Cao, Xiangyu.,Joseph, Nesta Benno.,Zhang, Yuda.,...&Xiu, Faxian.(2023).Nondegenerate Integer Quantum Hall Effect from Topological Surface States in Ag2Te Nanoplates.NANO LETTERS,23. |
| MLA | Leng, Pengliang,et al."Nondegenerate Integer Quantum Hall Effect from Topological Surface States in Ag2Te Nanoplates".NANO LETTERS 23(2023). |
入库方式： OAI收割
来源：合肥物质科学研究院
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