Bogoliubov corner excitations in a conventional s-wave superfluid
Higher-order topological superconductors and superfluids have triggered a great deal of interest in recent years. While Majorana zero-energy corner or hinge states have been studied intensively, whether superconductors and superfluids host higher-order topological Bogoliubov excitations with finite...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ad35e0 |
| _version_ | 1827298206945378304 |
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| author | Wei Tu Ya-Jie Wu Ning Li Miaodi Guo Junpeng Hou |
| author_facet | Wei Tu Ya-Jie Wu Ning Li Miaodi Guo Junpeng Hou |
| author_sort | Wei Tu |
| collection | DOAJ |
| description | Higher-order topological superconductors and superfluids have triggered a great deal of interest in recent years. While Majorana zero-energy corner or hinge states have been studied intensively, whether superconductors and superfluids host higher-order topological Bogoliubov excitations with finite energies remain elusive. In this work, we propose that Bogoliubov corner excitations with finite energies can be induced through only mirror-symmetric local potentials from a trivial conventional s -wave superfluid. The topological Bogoliubov excited modes originate from the nontrivial Bogoliubov excitation bands. These modes are protected by the mirror symmetry and are robust against mirror-symmetric perturbations as long as the Bogoliubov energy gap remains open. Our work provides a new insight into higher-order topological excitation states in superfluids and superconductors. |
| first_indexed | 2024-04-24T15:10:12Z |
| format | Article |
| id | doaj.art-04a2e4262b714d48b2eec7e3f946b770 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-04-24T15:10:12Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-04a2e4262b714d48b2eec7e3f946b7702024-04-02T11:02:46ZengIOP PublishingNew Journal of Physics1367-26302024-01-0126303305010.1088/1367-2630/ad35e0Bogoliubov corner excitations in a conventional s-wave superfluidWei Tu0Ya-Jie Wu1https://orcid.org/0000-0003-2664-8094Ning Li2Miaodi Guo3Junpeng Hou4School of Sciences, Xi’an Technological University , Xi’an 710032, People’s Republic of ChinaSchool of Sciences, Xi’an Technological University , Xi’an 710032, People’s Republic of China; Quantroyi Inc. , Shanghai 200023, People’s Republic of ChinaSchool of Sciences, Xi’an Technological University , Xi’an 710032, People’s Republic of ChinaSchool of Sciences, Xi’an Technological University , Xi’an 710032, People’s Republic of ChinaPinterest Inc. , San Francisco, CA 94103, United States of AmericaHigher-order topological superconductors and superfluids have triggered a great deal of interest in recent years. While Majorana zero-energy corner or hinge states have been studied intensively, whether superconductors and superfluids host higher-order topological Bogoliubov excitations with finite energies remain elusive. In this work, we propose that Bogoliubov corner excitations with finite energies can be induced through only mirror-symmetric local potentials from a trivial conventional s -wave superfluid. The topological Bogoliubov excited modes originate from the nontrivial Bogoliubov excitation bands. These modes are protected by the mirror symmetry and are robust against mirror-symmetric perturbations as long as the Bogoliubov energy gap remains open. Our work provides a new insight into higher-order topological excitation states in superfluids and superconductors.https://doi.org/10.1088/1367-2630/ad35e0s-wave superfluidBogoliubov corner excitationshigher-order topological states |
| spellingShingle | Wei Tu Ya-Jie Wu Ning Li Miaodi Guo Junpeng Hou Bogoliubov corner excitations in a conventional s-wave superfluid New Journal of Physics s-wave superfluid Bogoliubov corner excitations higher-order topological states |
| title | Bogoliubov corner excitations in a conventional s-wave superfluid |
| title_full | Bogoliubov corner excitations in a conventional s-wave superfluid |
| title_fullStr | Bogoliubov corner excitations in a conventional s-wave superfluid |
| title_full_unstemmed | Bogoliubov corner excitations in a conventional s-wave superfluid |
| title_short | Bogoliubov corner excitations in a conventional s-wave superfluid |
| title_sort | bogoliubov corner excitations in a conventional s wave superfluid |
| topic | s-wave superfluid Bogoliubov corner excitations higher-order topological states |
| url | https://doi.org/10.1088/1367-2630/ad35e0 |
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