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Nondegenerate Integer Quantum Hall Effect from Topological Surface States in Ag2Te Nanoplates.
Leng, Pengliang; Qian, Yingcai; Cao, Xiangyu; Joseph, Nesta Benno; Zhang, Yuda; Banerjee, Ayan; Li, Zihan; Liu, Fengshuo; Jia, Zehao; Ai, Linfeng; Zhang, Yong; Xie, Xiaoyi; Guo, Shengbing; Xi, Chuanying; Pi, Li; Zhang, Jinglei; Narayan, Awadhesh; Xiu, Faxian.
Afiliación
  • Leng P; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Qian Y; Shanghai Qi Zhi Institute, 41st Floor, AI Tower, No. 701 Yunjin Road, Xuhui District, Shanghai 200232, China.
  • Cao X; High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.
  • Joseph NB; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Zhang Y; Shanghai Qi Zhi Institute, 41st Floor, AI Tower, No. 701 Yunjin Road, Xuhui District, Shanghai 200232, China.
  • Banerjee A; Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
  • Li Z; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Liu F; Shanghai Qi Zhi Institute, 41st Floor, AI Tower, No. 701 Yunjin Road, Xuhui District, Shanghai 200232, China.
  • Jia Z; Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
  • Ai L; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Zhang Y; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Xie X; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Guo S; Shanghai Qi Zhi Institute, 41st Floor, AI Tower, No. 701 Yunjin Road, Xuhui District, Shanghai 200232, China.
  • Xi C; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Pi L; Shanghai Qi Zhi Institute, 41st Floor, AI Tower, No. 701 Yunjin Road, Xuhui District, Shanghai 200232, China.
  • Zhang J; High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China.
  • Narayan A; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Xiu F; Shanghai Qi Zhi Institute, 41st Floor, AI Tower, No. 701 Yunjin Road, Xuhui District, Shanghai 200232, China.
Nano Lett ; 23(19): 9026-9033, 2023 Oct 11.
Article en En | MEDLINE | ID: mdl-37767914
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 ß-Ag2Te nanostructures. Surface-state dominant conductance renders quantum Hall conductance plateaus with a step of e2/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 ß-Ag2Te has implications for both fundamental study and the realization of topological magneto-electric effects.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos