Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe_{0.55}Se_{0.45} investigated with special STM tips
The atomically clean surface of the iron-based superconductor FeTe_{0.55}Se_{0.45} is investigated by low-temperature scanning tunneling microscope (STM) with different tip apex states. We show that the scattering channel between the Γ and X/Y points of the sample's Brillouin zone can be visual...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2021-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.L032055 |
| _version_ | 1797210944783253504 |
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| author | Dongfei Wang Ruidan Zhong Genda Gu Roland Wiesendanger |
| author_facet | Dongfei Wang Ruidan Zhong Genda Gu Roland Wiesendanger |
| author_sort | Dongfei Wang |
| collection | DOAJ |
| description | The atomically clean surface of the iron-based superconductor FeTe_{0.55}Se_{0.45} is investigated by low-temperature scanning tunneling microscope (STM) with different tip apex states. We show that the scattering channel between the Γ and X/Y points of the sample's Brillouin zone can be visualized clearly by a supersharp STM tip. Furthermore, by manipulating a single Fe atom onto the tip apex, signatures of the orbital nature of the subsurface Fe layer of FeTe_{0.55}Se_{0.45} can be identified. By preparing a charged tip state, the intrinsic spatial inhomogeneity of the chemical potential of FeTe_{0.55}Se_{0.45} can be revealed. As a result, three different types of vortex bound states originating from locally varying topological properties of the FeTe_{0.55}Se_{0.45} surface are observed by scanning tunneling spectroscopy. |
| first_indexed | 2024-04-24T10:18:39Z |
| format | Article |
| id | doaj.art-9e63bb9d52d647bd97acbb6f8fc3bcb9 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:18:39Z |
| publishDate | 2021-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-9e63bb9d52d647bd97acbb6f8fc3bcb92024-04-12T17:13:23ZengAmerican Physical SocietyPhysical Review Research2643-15642021-08-0133L03205510.1103/PhysRevResearch.3.L032055Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe_{0.55}Se_{0.45} investigated with special STM tipsDongfei WangRuidan ZhongGenda GuRoland WiesendangerThe atomically clean surface of the iron-based superconductor FeTe_{0.55}Se_{0.45} is investigated by low-temperature scanning tunneling microscope (STM) with different tip apex states. We show that the scattering channel between the Γ and X/Y points of the sample's Brillouin zone can be visualized clearly by a supersharp STM tip. Furthermore, by manipulating a single Fe atom onto the tip apex, signatures of the orbital nature of the subsurface Fe layer of FeTe_{0.55}Se_{0.45} can be identified. By preparing a charged tip state, the intrinsic spatial inhomogeneity of the chemical potential of FeTe_{0.55}Se_{0.45} can be revealed. As a result, three different types of vortex bound states originating from locally varying topological properties of the FeTe_{0.55}Se_{0.45} surface are observed by scanning tunneling spectroscopy.http://doi.org/10.1103/PhysRevResearch.3.L032055 |
| spellingShingle | Dongfei Wang Ruidan Zhong Genda Gu Roland Wiesendanger Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe_{0.55}Se_{0.45} investigated with special STM tips Physical Review Research |
| title | Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe_{0.55}Se_{0.45} investigated with special STM tips |
| title_full | Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe_{0.55}Se_{0.45} investigated with special STM tips |
| title_fullStr | Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe_{0.55}Se_{0.45} investigated with special STM tips |
| title_full_unstemmed | Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe_{0.55}Se_{0.45} investigated with special STM tips |
| title_short | Surface orbital order and chemical potential inhomogeneity of the iron-based superconductor FeTe_{0.55}Se_{0.45} investigated with special STM tips |
| title_sort | surface orbital order and chemical potential inhomogeneity of the iron based superconductor fete 0 55 se 0 45 investigated with special stm tips |
| url | http://doi.org/10.1103/PhysRevResearch.3.L032055 |
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