Evidence for Majorana bound states in an iron-based superconductor
The search for Majorana bound states (MBSs) has been fueled by the prospect of using their non-Abelian statistics for robust quantum computation. Two-dimensional superconducting topological materials have been predicted to host MBSs as zero-energy modes in vortex cores. By using scanning tunneling s...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
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American Association for the Advancement of Science (AAAS)
2019
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| Online Access: | https://hdl.handle.net/1721.1/121418 |
| _version_ | 1826208224853884928 |
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| author | Wang, Dongfei Kong, Lingyuan Fan, Peng Chen, Hui Zhu, Shiyu Liu, Wenyao Cao, Lu Sun, Yujie Du, Shixuan Schneeloch, John Zhong, Ruidan Gu, Genda Fu, Liang Ding, Hong Gao, Hong-Jun |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Wang, Dongfei Kong, Lingyuan Fan, Peng Chen, Hui Zhu, Shiyu Liu, Wenyao Cao, Lu Sun, Yujie Du, Shixuan Schneeloch, John Zhong, Ruidan Gu, Genda Fu, Liang Ding, Hong Gao, Hong-Jun |
| author_sort | Wang, Dongfei |
| collection | MIT |
| description | The search for Majorana bound states (MBSs) has been fueled by the prospect of using their non-Abelian statistics for robust quantum computation. Two-dimensional superconducting topological materials have been predicted to host MBSs as zero-energy modes in vortex cores. By using scanning tunneling spectroscopy on the superconducting Dirac surface state of the iron-based superconductor FeTe[subscript 0.55]Se[subscript 0.45], we observed a sharp zero-bias peak inside a vortex core that does not split when moving away from the vortex center. The evolution of the peak under varying magnetic field, temperature, and tunneling barrier is consistent with the tunneling to a nearly pure MBS, separated from nontopological bound states. This observation offers a potential platform for realizing and manipulating MBSs at a relatively high temperature. |
| first_indexed | 2024-09-23T14:02:29Z |
| format | Article |
| id | mit-1721.1/121418 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:02:29Z |
| publishDate | 2019 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1214182022-09-28T17:55:17Z Evidence for Majorana bound states in an iron-based superconductor Wang, Dongfei Kong, Lingyuan Fan, Peng Chen, Hui Zhu, Shiyu Liu, Wenyao Cao, Lu Sun, Yujie Du, Shixuan Schneeloch, John Zhong, Ruidan Gu, Genda Fu, Liang Ding, Hong Gao, Hong-Jun Massachusetts Institute of Technology. Department of Physics The search for Majorana bound states (MBSs) has been fueled by the prospect of using their non-Abelian statistics for robust quantum computation. Two-dimensional superconducting topological materials have been predicted to host MBSs as zero-energy modes in vortex cores. By using scanning tunneling spectroscopy on the superconducting Dirac surface state of the iron-based superconductor FeTe[subscript 0.55]Se[subscript 0.45], we observed a sharp zero-bias peak inside a vortex core that does not split when moving away from the vortex center. The evolution of the peak under varying magnetic field, temperature, and tunneling barrier is consistent with the tunneling to a nearly pure MBS, separated from nontopological bound states. This observation offers a potential platform for realizing and manipulating MBSs at a relatively high temperature. 2019-06-26T17:43:43Z 2019-06-26T17:43:43Z 2018-10 2017-06 2019-03-22T17:38:31Z Article http://purl.org/eprint/type/JournalArticle 0036-8075 1095-9203 https://hdl.handle.net/1721.1/121418 Wang, Dongfei et al. “Evidence for Majorana Bound States in an Iron-Based Superconductor.” Science 362, 6412 (August 2018): 333–335 © 2017 The Author(s) http://dx.doi.org/10.1126/SCIENCE.AAO1797 Science Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Association for the Advancement of Science (AAAS) arXiv |
| spellingShingle | Wang, Dongfei Kong, Lingyuan Fan, Peng Chen, Hui Zhu, Shiyu Liu, Wenyao Cao, Lu Sun, Yujie Du, Shixuan Schneeloch, John Zhong, Ruidan Gu, Genda Fu, Liang Ding, Hong Gao, Hong-Jun Evidence for Majorana bound states in an iron-based superconductor |
| title | Evidence for Majorana bound states in an iron-based superconductor |
| title_full | Evidence for Majorana bound states in an iron-based superconductor |
| title_fullStr | Evidence for Majorana bound states in an iron-based superconductor |
| title_full_unstemmed | Evidence for Majorana bound states in an iron-based superconductor |
| title_short | Evidence for Majorana bound states in an iron-based superconductor |
| title_sort | evidence for majorana bound states in an iron based superconductor |
| url | https://hdl.handle.net/1721.1/121418 |
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