Journal article 501 views 127 downloads
Edge-state transport in circular quantum point contact quantum piezotronic transistors
,
Yan Zhang
Nano Energy, Volume: 85
Swansea University Author:
Lijie Li
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DOI (Published version): 10.1016/j.nanoen.2021.106002
Abstract
Quantum piezotronic transistor is studied based on HgTe/CdTe topological insulator with a circular quantum point contact. The radius of the circular region is modulated by strain-induced piezoelectric potential. The electronic transport behavior of the edge and bulk states is explored by calculating...
| Published in: | Nano Energy |
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| ISSN: | 2211-2855 |
| Published: |
Elsevier BV
2021
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa56507 |
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| Abstract: |
Quantum piezotronic transistor is studied based on HgTe/CdTe topological insulator with a circular quantum point contact. The radius of the circular region is modulated by strain-induced piezoelectric potential. The electronic transport behavior of the edge and bulk states is explored by calculating the conductance and electronic density distribution under different Fermi energies and strains. Transport property of edge states is studied by machine learning method and the transport conductance can be effectively predicted. These results show that the neural network can be used for obtaining electronic transport properties, and it has great potential for optimizing and designing high-performance quantum piezotronic devices. |
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| Keywords: |
Topological insulator, machine learning, quantum piezotronic devices, edge states |
| College: |
Faculty of Science and Engineering |