Interface modulated electron mobility enhancement in core-shell nanowires

doi:10.1088/1674-1056/ac7b1c

中国物理B ›› 2022, Vol. 31 ›› Issue (11): 110502-110502.doi: 10.1088/1674-1056/ac7b1c

Interface modulated electron mobility enhancement in core-shell nanowires

Yan He(贺言)^1,†, Hua-Kai Xu(许华慨)¹, and Gang Ouyang(欧阳钢)^2,‡

1 College of Science, Guangdong University of Petrochemical Technology, Maoming 525000, China;
2 Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China

收稿日期:2022-05-07 修回日期:2022-06-12 接受日期:2022-06-22 出版日期:2022-10-17 发布日期:2022-10-25
通讯作者: Yan He, Gang Ouyang E-mail:yanhe@gdupt.edu.cn;gangouy@hunnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 91833302 and U2001215), the Guangdong Basic and Applied Basic Research Foundation, China (Grant No. 2022A1515010989), and the Special Project in Key Fields of Guandong Universities, China (Grant No. 2022ZDZX3015).

Interface modulated electron mobility enhancement in core-shell nanowires

Yan He(贺言)^1,†, Hua-Kai Xu(许华慨)¹, and Gang Ouyang(欧阳钢)^2,‡

1 College of Science, Guangdong University of Petrochemical Technology, Maoming 525000, China;
2 Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China

Received:2022-05-07 Revised:2022-06-12 Accepted:2022-06-22 Online:2022-10-17 Published:2022-10-25
Contact: Yan He, Gang Ouyang E-mail:yanhe@gdupt.edu.cn;gangouy@hunnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 91833302 and U2001215), the Guangdong Basic and Applied Basic Research Foundation, China (Grant No. 2022A1515010989), and the Special Project in Key Fields of Guandong Universities, China (Grant No. 2022ZDZX3015).

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摘要/Abstract

摘要： The transport properties of core-shell nanowires (CSNWs) under interface modulation and confinement are investigated based on the atomic-bond-relaxation (ABR) correlation mechanism and Fermi's golden rule. An analytical expression for the relationship between carrier mobility and interface mismatch strain is derived and the influence of size, shell thickness and alloyed layer on effective mass, band structures, and deformation potential constant are studied. It is found that interface modulation can not only reduce the lattice mismatch to optimize the band alignment, but also participate in the carrier transport for enhancing mobility. Moreover, the underlying mechanism regarding the interface shape dependence of transport properties in CSNWs is clarified. The great enhancement of electron mobility suggests that the interface modulation may become a potential pathway to improving the performance of nanoelectronic devices.

关键词: core-shell nanowires, interface modulated, electron mobility

Abstract: The transport properties of core-shell nanowires (CSNWs) under interface modulation and confinement are investigated based on the atomic-bond-relaxation (ABR) correlation mechanism and Fermi's golden rule. An analytical expression for the relationship between carrier mobility and interface mismatch strain is derived and the influence of size, shell thickness and alloyed layer on effective mass, band structures, and deformation potential constant are studied. It is found that interface modulation can not only reduce the lattice mismatch to optimize the band alignment, but also participate in the carrier transport for enhancing mobility. Moreover, the underlying mechanism regarding the interface shape dependence of transport properties in CSNWs is clarified. The great enhancement of electron mobility suggests that the interface modulation may become a potential pathway to improving the performance of nanoelectronic devices.

Key words: core-shell nanowires, interface modulated, electron mobility

中图分类号: (Classical transport)

05.60.Cd

05.70.Np (Interface and surface thermodynamics)

Yan He(贺言), Hua-Kai Xu(许华慨), and Gang Ouyang(欧阳钢). Interface modulated electron mobility enhancement in core-shell nanowires[J]. 中国物理B, 2022, 31(11): 110502-110502.

Yan He(贺言), Hua-Kai Xu(许华慨), and Gang Ouyang(欧阳钢). Interface modulated electron mobility enhancement in core-shell nanowires[J]. Chin. Phys. B, 2022, 31(11): 110502-110502.

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Interface modulated electron mobility enhancement in core-shell nanowires

Interface modulated electron mobility enhancement in core-shell nanowires

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