Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor
Majorana zero modes (MZMs) are spatially localized, zero-energy fractional quasiparticles with non-Abelian braiding statistics that hold promise for topological quantum computing. Owing to the particle-antiparticle equivalence, MZMs exhibit quantized conductance at low temperature. By using variable...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Association for the Advancement of Science (AAAS)
2021
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| Online Access: | https://hdl.handle.net/1721.1/129968 |
| _version_ | 1811090860236865536 |
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| author | Zhu, Shiyu Kong, Lingyuan Cao, Lu Chen, Hui Papaj, Michal Du, Shixuan Xing, Yuqing Liu, Wenyao Wang, Dongfei Shen, Chengmin Yang, Fazhi Schneeloch, John Zhong, Ruidan Gu, Genda Fu, Liang Zhang, Yu-Yang Ding, Hong Gao, Hong-Jun |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Zhu, Shiyu Kong, Lingyuan Cao, Lu Chen, Hui Papaj, Michal Du, Shixuan Xing, Yuqing Liu, Wenyao Wang, Dongfei Shen, Chengmin Yang, Fazhi Schneeloch, John Zhong, Ruidan Gu, Genda Fu, Liang Zhang, Yu-Yang Ding, Hong Gao, Hong-Jun |
| author_sort | Zhu, Shiyu |
| collection | MIT |
| description | Majorana zero modes (MZMs) are spatially localized, zero-energy fractional quasiparticles with non-Abelian braiding statistics that hold promise for topological quantum computing. Owing to the particle-antiparticle equivalence, MZMs exhibit quantized conductance at low temperature. By using variable-tunnel-coupled scanning tunneling spectroscopy, we studied tunneling conductance of vortex bound states on FeTe0.55Se0.45 superconductors. We report observations of conductance plateaus as a function of tunnel coupling for zero-energy vortex bound states with values close to or even reaching the 2e2/h quantum conductance (where e is the electron charge and h is Planck's constant). By contrast, no plateaus were observed on either finite energy vortex bound states or in the continuum of electronic states outside the superconducting gap. This behavior of the zero-mode conductance supports the existence of MZMs in FeTe0.55Se0.45 |
| first_indexed | 2024-09-23T14:53:07Z |
| format | Article |
| id | mit-1721.1/129968 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:53:07Z |
| publishDate | 2021 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1299682022-10-01T23:10:12Z Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor Zhu, Shiyu Kong, Lingyuan Cao, Lu Chen, Hui Papaj, Michal Du, Shixuan Xing, Yuqing Liu, Wenyao Wang, Dongfei Shen, Chengmin Yang, Fazhi Schneeloch, John Zhong, Ruidan Gu, Genda Fu, Liang Zhang, Yu-Yang Ding, Hong Gao, Hong-Jun Massachusetts Institute of Technology. Department of Physics Majorana zero modes (MZMs) are spatially localized, zero-energy fractional quasiparticles with non-Abelian braiding statistics that hold promise for topological quantum computing. Owing to the particle-antiparticle equivalence, MZMs exhibit quantized conductance at low temperature. By using variable-tunnel-coupled scanning tunneling spectroscopy, we studied tunneling conductance of vortex bound states on FeTe0.55Se0.45 superconductors. We report observations of conductance plateaus as a function of tunnel coupling for zero-energy vortex bound states with values close to or even reaching the 2e2/h quantum conductance (where e is the electron charge and h is Planck's constant). By contrast, no plateaus were observed on either finite energy vortex bound states or in the continuum of electronic states outside the superconducting gap. This behavior of the zero-mode conductance supports the existence of MZMs in FeTe0.55Se0.45 2021-02-22T22:33:45Z 2021-02-22T22:33:45Z 2019-12 2019-02 2020-10-23T16:25:49Z Article http://purl.org/eprint/type/JournalArticle 0036-8075 1095-9203 https://hdl.handle.net/1721.1/129968 Zhu, Shiyu et al. "Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor." Science 367, 6474: 189-192 © 2020 American Association for the Advancement of Science en http://dx.doi.org/10.1126/science.aax0274 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 | Zhu, Shiyu Kong, Lingyuan Cao, Lu Chen, Hui Papaj, Michal Du, Shixuan Xing, Yuqing Liu, Wenyao Wang, Dongfei Shen, Chengmin Yang, Fazhi Schneeloch, John Zhong, Ruidan Gu, Genda Fu, Liang Zhang, Yu-Yang Ding, Hong Gao, Hong-Jun Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor |
| title | Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor |
| title_full | Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor |
| title_fullStr | Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor |
| title_full_unstemmed | Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor |
| title_short | Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor |
| title_sort | nearly quantized conductance plateau of vortex zero mode in an iron based superconductor |
| url | https://hdl.handle.net/1721.1/129968 |
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