Response function of four-dimensional topological insulator
In this paper, we apply linear response theory to investigate the current-current response in four-dimensional topological insulator (TI). For lattices with periodic boundary conditions, we show that the bulk DC response function is proportional to the first Chern Number (1CN) and equal to the 2D...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2024
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| Online Access: | https://hdl.handle.net/10356/175654 |