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Bi 2 Se 3 topological insulator quantum wires
| Content Provider | Semantic Scholar |
|---|---|
| Author | Barnes, A. Nikolic And C. H. W. |
| Copyright Year | 2018 |
| Abstract | We study the effect of 3D topological insulator contributions to the band structure andwavefunctions of quasi-one-dimensional electron systems.Ourmodel for this system consists of an effective Hamiltonian derived previously in the literature from the crystal symmetries of Bi2Se3.We find that in wires whose face lies in the plane formed by the y and z crystal directions andwhosewidth is around 25 quintuple layers ormore, the bands nearest to the gap are non-monotonic; we show that this has implications for the conductance of thewire. In addition, we observed increasing penetration depth of surface states with increasingwavenumber of the propagatingmode.We believe these results have qualitative relevance to the family of 3D topological insulators whose crystal structure is characterised by the space group D d 3 5 , and that thework done here contributes to thewider field of the study of conductance in topological insulators. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.repository.cam.ac.uk/bitstream/handle/1810/288544/Nikolic_2018_J._Phys._Commun._2_095007.pdf;jsessionid=3B647FAAF7FA39976EB1A73E0215B81E?sequence=3 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
