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https://doi.org/10.1038/s41598-018-34903-9
DC Field | Value | |
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dc.title | Curvature induced quantum phase transitions in an electron-hole system | |
dc.contributor.author | Siu, Z.B | |
dc.contributor.author | Chang, J.-Y | |
dc.contributor.author | Tan, S.G | |
dc.contributor.author | Jalil, M.B.A | |
dc.contributor.author | Chang, C.-R | |
dc.date.accessioned | 2020-10-20T03:24:39Z | |
dc.date.available | 2020-10-20T03:24:39Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Siu, Z.B, Chang, J.-Y, Tan, S.G, Jalil, M.B.A, Chang, C.-R (2018). Curvature induced quantum phase transitions in an electron-hole system. Scientific Reports 8 (1) : 16497. ScholarBank@NUS Repository. https://doi.org/10.1038/s41598-018-34903-9 | |
dc.identifier.issn | 20452322 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/177806 | |
dc.description.abstract | In this work, we study the effect of introducing a periodic curvature on nanostructures, and demonstrate that the curvature can lead to a transition from a topologically trivial state to a non-trivial state. We first present the Hamiltonian for an arbitrarily curved nanostructure, and introduce a numerical scheme for calculating the bandstructure of a periodically curved nanostructure. Using this scheme, we calculate the bandstructure for a sinusoidally curved two-dimensional electron gas. We show that the curvature can lead to a partner switching reminiscent of a topological phase transition at the time reversal invariant momenta. We then study the Bernevig-Hughes-Zhang (BHZ) Hamiltonian for a two-dimensional quantum well. We show that introducing a curvature can lead to the emergence of topological surface states. © 2018, The Author(s). | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.source | Unpaywall 20201031 | |
dc.type | Article | |
dc.contributor.department | ELECTRICAL AND COMPUTER ENGINEERING | |
dc.description.doi | 10.1038/s41598-018-34903-9 | |
dc.description.sourcetitle | Scientific Reports | |
dc.description.volume | 8 | |
dc.description.issue | 1 | |
dc.description.page | 16497 | |
Appears in Collections: | Staff Publications Elements |
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