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- Scopus: eid_2-s2.0-85102951988
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Article: Transport induced dimer state from topological corner states
Title | Transport induced dimer state from topological corner states |
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Authors | |
Keywords | higher-order topological insulators multiple resonant tunneling in-plane Zeeman field two-dimensional honeycomb lattice |
Issue Date | 2021 |
Publisher | Springer Verlag, co-published with Science China Press. The Journal's web site is located at http://www.scichina.com:8083/sciGe/EN/volumn/current.shtml |
Citation | Science China Physics, Mechanics & Astronomy, 2021, v. 64 n. 5, p. article no. 257811 How to Cite? |
Abstract | Recently, a new type of second-order topological insulator has been theoretically proposed by introducing an in-plane Zeeman field into the Kane-Mele model in the two-dimensional honeycomb lattice. A pair of topological corner states arise at the corners with obtuse angles of an isolated diamond-shaped flake. To probe the corner states, we study their transport properties by attaching two leads to the system. Dressed by incoming electrons, the dynamic corner state is very different from its static counterpart. Resonant tunneling through the dressed corner state can occur by tuning the in-plane Zeeman field. At the resonance, the pair of spatially well separated and highly localized corner states can form a dimer state, whose wavefunction extends almost the entire bulk of the diamond-shaped flake. By varying the Zeeman field strength, multiple resonant tunneling events are mediated by the same dimer state. This re-entrance effect can be understood by a simple model. These findings extend our understanding of dynamic aspects of the second-order topological corner states. |
Description | Bronze open access |
Persistent Identifier | http://hdl.handle.net/10722/299157 |
ISSN | 2023 Impact Factor: 6.4 2023 SCImago Journal Rankings: 1.165 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wang, KT | - |
dc.contributor.author | Ren, Y | - |
dc.contributor.author | Xu, F | - |
dc.contributor.author | Wei, Y | - |
dc.contributor.author | Wang, J | - |
dc.date.accessioned | 2021-04-28T02:26:56Z | - |
dc.date.available | 2021-04-28T02:26:56Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Science China Physics, Mechanics & Astronomy, 2021, v. 64 n. 5, p. article no. 257811 | - |
dc.identifier.issn | 1674-7348 | - |
dc.identifier.uri | http://hdl.handle.net/10722/299157 | - |
dc.description | Bronze open access | - |
dc.description.abstract | Recently, a new type of second-order topological insulator has been theoretically proposed by introducing an in-plane Zeeman field into the Kane-Mele model in the two-dimensional honeycomb lattice. A pair of topological corner states arise at the corners with obtuse angles of an isolated diamond-shaped flake. To probe the corner states, we study their transport properties by attaching two leads to the system. Dressed by incoming electrons, the dynamic corner state is very different from its static counterpart. Resonant tunneling through the dressed corner state can occur by tuning the in-plane Zeeman field. At the resonance, the pair of spatially well separated and highly localized corner states can form a dimer state, whose wavefunction extends almost the entire bulk of the diamond-shaped flake. By varying the Zeeman field strength, multiple resonant tunneling events are mediated by the same dimer state. This re-entrance effect can be understood by a simple model. These findings extend our understanding of dynamic aspects of the second-order topological corner states. | - |
dc.language | eng | - |
dc.publisher | Springer Verlag, co-published with Science China Press. The Journal's web site is located at http://www.scichina.com:8083/sciGe/EN/volumn/current.shtml | - |
dc.relation.ispartof | Science China Physics, Mechanics & Astronomy | - |
dc.rights | This is a post-peer-review, pre-copyedit version of an article published in [insert journal title]. The final authenticated version is available online at: https://doi.org/[insert DOI] | - |
dc.subject | higher-order topological insulators | - |
dc.subject | multiple resonant tunneling | - |
dc.subject | in-plane Zeeman field | - |
dc.subject | two-dimensional honeycomb lattice | - |
dc.title | Transport induced dimer state from topological corner states | - |
dc.type | Article | - |
dc.identifier.email | Wang, J: jianwang@hku.hk | - |
dc.identifier.authority | Wang, J=rp00799 | - |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.doi | 10.1007/s11433-020-1677-9 | - |
dc.identifier.scopus | eid_2-s2.0-85102951988 | - |
dc.identifier.hkuros | 322175 | - |
dc.identifier.volume | 64 | - |
dc.identifier.issue | 5 | - |
dc.identifier.spage | article no. 257811 | - |
dc.identifier.epage | article no. 257811 | - |
dc.identifier.isi | WOS:000632060100001 | - |
dc.publisher.place | China | - |