Design and realization of topological {Dirac} fermions on a triangular lattice
Large-gap quantum spin Hall insulators are promising materials for room-temperature applications based on Dirac fermions. Key to engineer the topologically non-trivial band ordering and sizable band gaps is strong spin-orbit interaction. Following Kane and Mele’s original suggestion, one approach is...
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ftunibolognairis:oai:cris.unibo.it:11585/892831 2024-04-21T08:06:13+00:00 Design and realization of topological {Dirac} fermions on a triangular lattice Bauernfeind Maximilian Erhardt Jonas Eck Philipp Thakur Pardeep K. Gabel Judith Lee Tien-Lin Schäfer Jörg Moser Simon Di Sante Domenico Claessen Ralph Sangiovanni Giorgio Bauernfeind Maximilian , Erhardt Jonas , Eck Philipp , Thakur Pardeep K. , Gabel Judith , Lee Tien-Lin , Schäfer Jörg , Moser Simon , Di Sante Domenico , Claessen Ralph , Sangiovanni Giorgio 2021 ELETTRONICO https://hdl.handle.net/11585/892831 https://doi.org/10.1038/s41467-021-25627-y https://www.nature.com/articles/s41467-021-25627-y eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000700373400005 volume:12 issue:1 firstpage:1 lastpage:8 numberofpages:8 journal:NATURE COMMUNICATIONS info:eu-repo/grantAgreement/EC/H2020/897276 https://hdl.handle.net/11585/892831 doi:10.1038/s41467-021-25627-y info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85114855916 https://www.nature.com/articles/s41467-021-25627-y info:eu-repo/semantics/openAccess Quantum Spin-Hall Insulator Indenene ARPES DFT info:eu-repo/semantics/article 2021 ftunibolognairis https://doi.org/10.1038/s41467-021-25627-y 2024-04-05T00:35:54Z Large-gap quantum spin Hall insulators are promising materials for room-temperature applications based on Dirac fermions. Key to engineer the topologically non-trivial band ordering and sizable band gaps is strong spin-orbit interaction. Following Kane and Mele’s original suggestion, one approach is to synthesize monolayers of heavy atoms with honeycomb coordination accommodated on templates with hexagonal symmetry. Yet, in the majority of cases, this recipe leads to triangular lattices, typically hosting metals or trivial insulators. Here, we conceive and realize “indenene”, a triangular monolayer of indium on SiC exhibiting non-trivial valley physics driven by local spin-orbit coupling, which prevails over inversion-symmetry breaking terms. By means of tunneling microscopy of the 2D bulk we identify the quantum spin Hall phase of this triangular lattice and unveil how a hidden honeycomb connectivity emerges from interference patterns in Bloch px ± ipy-derived wave functions. Article in Journal/Newspaper IPY IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Nature Communications 12 1 |
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IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
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ftunibolognairis |
language |
English |
topic |
Quantum Spin-Hall Insulator Indenene ARPES DFT |
spellingShingle |
Quantum Spin-Hall Insulator Indenene ARPES DFT Bauernfeind Maximilian Erhardt Jonas Eck Philipp Thakur Pardeep K. Gabel Judith Lee Tien-Lin Schäfer Jörg Moser Simon Di Sante Domenico Claessen Ralph Sangiovanni Giorgio Design and realization of topological {Dirac} fermions on a triangular lattice |
topic_facet |
Quantum Spin-Hall Insulator Indenene ARPES DFT |
description |
Large-gap quantum spin Hall insulators are promising materials for room-temperature applications based on Dirac fermions. Key to engineer the topologically non-trivial band ordering and sizable band gaps is strong spin-orbit interaction. Following Kane and Mele’s original suggestion, one approach is to synthesize monolayers of heavy atoms with honeycomb coordination accommodated on templates with hexagonal symmetry. Yet, in the majority of cases, this recipe leads to triangular lattices, typically hosting metals or trivial insulators. Here, we conceive and realize “indenene”, a triangular monolayer of indium on SiC exhibiting non-trivial valley physics driven by local spin-orbit coupling, which prevails over inversion-symmetry breaking terms. By means of tunneling microscopy of the 2D bulk we identify the quantum spin Hall phase of this triangular lattice and unveil how a hidden honeycomb connectivity emerges from interference patterns in Bloch px ± ipy-derived wave functions. |
author2 |
Bauernfeind Maximilian , Erhardt Jonas , Eck Philipp , Thakur Pardeep K. , Gabel Judith , Lee Tien-Lin , Schäfer Jörg , Moser Simon , Di Sante Domenico , Claessen Ralph , Sangiovanni Giorgio |
format |
Article in Journal/Newspaper |
author |
Bauernfeind Maximilian Erhardt Jonas Eck Philipp Thakur Pardeep K. Gabel Judith Lee Tien-Lin Schäfer Jörg Moser Simon Di Sante Domenico Claessen Ralph Sangiovanni Giorgio |
author_facet |
Bauernfeind Maximilian Erhardt Jonas Eck Philipp Thakur Pardeep K. Gabel Judith Lee Tien-Lin Schäfer Jörg Moser Simon Di Sante Domenico Claessen Ralph Sangiovanni Giorgio |
author_sort |
Bauernfeind Maximilian |
title |
Design and realization of topological {Dirac} fermions on a triangular lattice |
title_short |
Design and realization of topological {Dirac} fermions on a triangular lattice |
title_full |
Design and realization of topological {Dirac} fermions on a triangular lattice |
title_fullStr |
Design and realization of topological {Dirac} fermions on a triangular lattice |
title_full_unstemmed |
Design and realization of topological {Dirac} fermions on a triangular lattice |
title_sort |
design and realization of topological {dirac} fermions on a triangular lattice |
publishDate |
2021 |
url |
https://hdl.handle.net/11585/892831 https://doi.org/10.1038/s41467-021-25627-y https://www.nature.com/articles/s41467-021-25627-y |
genre |
IPY |
genre_facet |
IPY |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000700373400005 volume:12 issue:1 firstpage:1 lastpage:8 numberofpages:8 journal:NATURE COMMUNICATIONS info:eu-repo/grantAgreement/EC/H2020/897276 https://hdl.handle.net/11585/892831 doi:10.1038/s41467-021-25627-y info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85114855916 https://www.nature.com/articles/s41467-021-25627-y |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-021-25627-y |
container_title |
Nature Communications |
container_volume |
12 |
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1 |
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1796945510024609792 |