A new Majorana platform in an Fe-As bilayer superconductor
© 2020, The Author(s). Iron-chalcogenide superconductors have emerged as a promising Majorana platform for topological quantum computation. By combining topological band and superconductivity in a single material, they provide significant advantage to realize isolated Majorana zero modes. However, i...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2022
|
| Online Access: | https://hdl.handle.net/1721.1/141842 |
| _version_ | 1826194090764533760 |
|---|---|
| author | Liu, Wenyao Cao, Lu Zhu, Shiyu Kong, Lingyuan Wang, Guangwei Papaj, Michał Zhang, Peng Liu, Ya-Bin Chen, Hui Li, Geng Yang, Fazhi Kondo, Takeshi Du, Shixuan Cao, Guang-Han Shin, Shik Fu, Liang Yin, Zhiping Gao, Hong-Jun Ding, Hong |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Liu, Wenyao Cao, Lu Zhu, Shiyu Kong, Lingyuan Wang, Guangwei Papaj, Michał Zhang, Peng Liu, Ya-Bin Chen, Hui Li, Geng Yang, Fazhi Kondo, Takeshi Du, Shixuan Cao, Guang-Han Shin, Shik Fu, Liang Yin, Zhiping Gao, Hong-Jun Ding, Hong |
| author_sort | Liu, Wenyao |
| collection | MIT |
| description | © 2020, The Author(s). Iron-chalcogenide superconductors have emerged as a promising Majorana platform for topological quantum computation. By combining topological band and superconductivity in a single material, they provide significant advantage to realize isolated Majorana zero modes. However, iron-chalcogenide superconductors, especially Fe(Te,Se), suffer from strong inhomogeneity which may hamper their practical application. In addition, some iron-pnictide superconductors have been demonstrated to have topological surface states, yet no Majorana zero mode has been observed inside their vortices, raising a question of universality about this new Majorana platform. In this work, through angle-resolved photoemission spectroscopy and scanning tunneling microscopy/spectroscopy measurement, we identify Dirac surface states and Majorana zero modes, respectively, for the first time in an iron-pnictide superconductor, CaKFe4As4. More strikingly, the multiple vortex bound states with integer-quantization sequences can be accurately reproduced by our model calculation, firmly establishing Majorana nature of the zero mode. |
| first_indexed | 2024-09-23T09:50:20Z |
| format | Article |
| id | mit-1721.1/141842 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:50:20Z |
| publishDate | 2022 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1418422023-03-30T20:41:06Z A new Majorana platform in an Fe-As bilayer superconductor Liu, Wenyao Cao, Lu Zhu, Shiyu Kong, Lingyuan Wang, Guangwei Papaj, Michał Zhang, Peng Liu, Ya-Bin Chen, Hui Li, Geng Yang, Fazhi Kondo, Takeshi Du, Shixuan Cao, Guang-Han Shin, Shik Fu, Liang Yin, Zhiping Gao, Hong-Jun Ding, Hong Massachusetts Institute of Technology. Department of Physics © 2020, The Author(s). Iron-chalcogenide superconductors have emerged as a promising Majorana platform for topological quantum computation. By combining topological band and superconductivity in a single material, they provide significant advantage to realize isolated Majorana zero modes. However, iron-chalcogenide superconductors, especially Fe(Te,Se), suffer from strong inhomogeneity which may hamper their practical application. In addition, some iron-pnictide superconductors have been demonstrated to have topological surface states, yet no Majorana zero mode has been observed inside their vortices, raising a question of universality about this new Majorana platform. In this work, through angle-resolved photoemission spectroscopy and scanning tunneling microscopy/spectroscopy measurement, we identify Dirac surface states and Majorana zero modes, respectively, for the first time in an iron-pnictide superconductor, CaKFe4As4. More strikingly, the multiple vortex bound states with integer-quantization sequences can be accurately reproduced by our model calculation, firmly establishing Majorana nature of the zero mode. 2022-04-12T12:30:19Z 2022-04-12T12:30:19Z 2020 2022-04-12T12:25:49Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/141842 Liu, Wenyao, Cao, Lu, Zhu, Shiyu, Kong, Lingyuan, Wang, Guangwei et al. 2020. "A new Majorana platform in an Fe-As bilayer superconductor." Nature Communications, 11 (1). en 10.1038/S41467-020-19487-1 Nature Communications Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Nature |
| spellingShingle | Liu, Wenyao Cao, Lu Zhu, Shiyu Kong, Lingyuan Wang, Guangwei Papaj, Michał Zhang, Peng Liu, Ya-Bin Chen, Hui Li, Geng Yang, Fazhi Kondo, Takeshi Du, Shixuan Cao, Guang-Han Shin, Shik Fu, Liang Yin, Zhiping Gao, Hong-Jun Ding, Hong A new Majorana platform in an Fe-As bilayer superconductor |
| title | A new Majorana platform in an Fe-As bilayer superconductor |
| title_full | A new Majorana platform in an Fe-As bilayer superconductor |
| title_fullStr | A new Majorana platform in an Fe-As bilayer superconductor |
| title_full_unstemmed | A new Majorana platform in an Fe-As bilayer superconductor |
| title_short | A new Majorana platform in an Fe-As bilayer superconductor |
| title_sort | new majorana platform in an fe as bilayer superconductor |
| url | https://hdl.handle.net/1721.1/141842 |
| work_keys_str_mv | AT liuwenyao anewmajoranaplatforminanfeasbilayersuperconductor AT caolu anewmajoranaplatforminanfeasbilayersuperconductor AT zhushiyu anewmajoranaplatforminanfeasbilayersuperconductor AT konglingyuan anewmajoranaplatforminanfeasbilayersuperconductor AT wangguangwei anewmajoranaplatforminanfeasbilayersuperconductor AT papajmichał anewmajoranaplatforminanfeasbilayersuperconductor AT zhangpeng anewmajoranaplatforminanfeasbilayersuperconductor AT liuyabin anewmajoranaplatforminanfeasbilayersuperconductor AT chenhui anewmajoranaplatforminanfeasbilayersuperconductor AT ligeng anewmajoranaplatforminanfeasbilayersuperconductor AT yangfazhi anewmajoranaplatforminanfeasbilayersuperconductor AT kondotakeshi anewmajoranaplatforminanfeasbilayersuperconductor AT dushixuan anewmajoranaplatforminanfeasbilayersuperconductor AT caoguanghan anewmajoranaplatforminanfeasbilayersuperconductor AT shinshik anewmajoranaplatforminanfeasbilayersuperconductor AT fuliang anewmajoranaplatforminanfeasbilayersuperconductor AT yinzhiping anewmajoranaplatforminanfeasbilayersuperconductor AT gaohongjun anewmajoranaplatforminanfeasbilayersuperconductor AT dinghong anewmajoranaplatforminanfeasbilayersuperconductor AT liuwenyao newmajoranaplatforminanfeasbilayersuperconductor AT caolu newmajoranaplatforminanfeasbilayersuperconductor AT zhushiyu newmajoranaplatforminanfeasbilayersuperconductor AT konglingyuan newmajoranaplatforminanfeasbilayersuperconductor AT wangguangwei newmajoranaplatforminanfeasbilayersuperconductor AT papajmichał newmajoranaplatforminanfeasbilayersuperconductor AT zhangpeng newmajoranaplatforminanfeasbilayersuperconductor AT liuyabin newmajoranaplatforminanfeasbilayersuperconductor AT chenhui newmajoranaplatforminanfeasbilayersuperconductor AT ligeng newmajoranaplatforminanfeasbilayersuperconductor AT yangfazhi newmajoranaplatforminanfeasbilayersuperconductor AT kondotakeshi newmajoranaplatforminanfeasbilayersuperconductor AT dushixuan newmajoranaplatforminanfeasbilayersuperconductor AT caoguanghan newmajoranaplatforminanfeasbilayersuperconductor AT shinshik newmajoranaplatforminanfeasbilayersuperconductor AT fuliang newmajoranaplatforminanfeasbilayersuperconductor AT yinzhiping newmajoranaplatforminanfeasbilayersuperconductor AT gaohongjun newmajoranaplatforminanfeasbilayersuperconductor AT dinghong newmajoranaplatforminanfeasbilayersuperconductor |