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Experimental signature of a topological quantum dot
Topological insulator nanoparticles (TINPs) host topologically protected Dirac surface states, just like their bulk counterparts. For TINPs of radius
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| Published in: | Nanoscale 2020-11, Vol.12 (44), p.22817-22825 |
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| Main Authors: | , , , , , , , , , , |
| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-c350t-49fb0059a5c9cd7dedfbd671e60f77d5e938c72615f13465717861a3fdc75ca3 |
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| cites | cdi_FETCH-LOGICAL-c350t-49fb0059a5c9cd7dedfbd671e60f77d5e938c72615f13465717861a3fdc75ca3 |
| container_end_page | 22825 |
| container_issue | 44 |
| container_start_page | 22817 |
| container_title | Nanoscale |
| container_volume | 12 |
| creator | Rider, Marie S Sokolikova, Maria Hanham, Stephen M Navarro-Cía, Miguel Haynes, Peter D Lee, Derek K. K Daniele, Maddalena Cestelli Guidi, Mariangela Mattevi, Cecilia Lupi, Stefano Giannini, Vincenzo |
| description | Topological insulator nanoparticles (TINPs) host topologically protected Dirac surface states, just like their bulk counterparts. For TINPs of radius |
| doi_str_mv | 10.1039/d0nr06523d |
| format | article |
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2
Te
3
topological quantum dots, remarkably observed at room temperature.
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2
Te
3
topological quantum dots, remarkably observed at room temperature.
Topological insulator nanoparticles (TINPs) host topologically protected Dirac surface states, just like their bulk counterparts.</description><subject>Absorption cross sections</subject><subject>Bismuth tellurides</subject><subject>Discretization</subject><subject>Energy levels</subject><subject>Nanoparticles</subject><subject>Quantum confinement</subject><subject>Quantum dots</subject><subject>Quantum phenomena</subject><subject>Room temperature</subject><subject>Topological insulators</subject><issn>2040-3364</issn><issn>2040-3372</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNpd0E1LAzEQBuAgCtbqxbuw4EWE1UlmkzRHsfUDioL0vqT5KFu2m22yC_rv3Vqp4GkG5mGYeQm5pHBHAdW9hSaC4AztERkxKCBHlOz40IvilJyltAYQCgWOCM4-WxerjWs6XWepWjW666PLgs901oU21GFVmWG07XXT9ZvMhu6cnHhdJ3fxW8dk8TRbPL7k8_fn18eHeW6QQ5cXyi8BuNLcKGOlddYvrZDUCfBSWu4UToxkgnJPsRBcUjkRVKO3RnKjcUxu9mvbGLa9S125qZJxda0bF_pUsoIrwSaKqYFe_6Pr0MdmOG5QgqESUu3U7V6ZGFKKzpft8LmOXyWFchdfOYW3j5_4pgO-2uOYzMH9xYvf0bBrHA</recordid><startdate>20201128</startdate><enddate>20201128</enddate><creator>Rider, Marie S</creator><creator>Sokolikova, Maria</creator><creator>Hanham, Stephen M</creator><creator>Navarro-Cía, Miguel</creator><creator>Haynes, Peter D</creator><creator>Lee, Derek K. 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K</au><au>Daniele, Maddalena</au><au>Cestelli Guidi, Mariangela</au><au>Mattevi, Cecilia</au><au>Lupi, Stefano</au><au>Giannini, Vincenzo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental signature of a topological quantum dot</atitle><jtitle>Nanoscale</jtitle><date>2020-11-28</date><risdate>2020</risdate><volume>12</volume><issue>44</issue><spage>22817</spage><epage>22825</epage><pages>22817-22825</pages><issn>2040-3364</issn><eissn>2040-3372</eissn><abstract>Topological insulator nanoparticles (TINPs) host topologically protected Dirac surface states, just like their bulk counterparts. For TINPs of radius <100 nm, quantum confinement on the surface results in the discretization of the Dirac cone. This system of discrete energy levels is referred to as a topological quantum dot (TQD) with energy level spacing on the order of Terahertz (THz), which is tunable with material-type and particle size. The presence of these discretized energy levels in turn leads to a new electron-mediated phonon-light coupling in the THz range, and the resulting mode can be observed in the absorption cross-section of the TINPs. We present the first experimental evidence of this new quantum phenomenon in Bi
2
Te
3
topological quantum dots, remarkably observed at room temperature.
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| ispartof | Nanoscale, 2020-11, Vol.12 (44), p.22817-22825 |
| issn | 2040-3364 2040-3372 |
| language | eng |
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| source | Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list) |
| subjects | Absorption cross sections Bismuth tellurides Discretization Energy levels Nanoparticles Quantum confinement Quantum dots Quantum phenomena Room temperature Topological insulators |
| title | Experimental signature of a topological quantum dot |
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