Nesting-induced local electronic patterns around a single As (Te, Se) vacancy in iron-based superconductors
The local electronic states around a single As (Te, Se) vacancy are investigated in order to shed light on the role of ligands in a series of iron-based superconductors. Such a vacancy can produce a local hopping correction ranging from −0.22 to 0.12 eV and always induce two in-gap resonance peaks i...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/aac54c |
| _version_ | 1827873457451302912 |
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| author | Degang Zhang Zhihai Liu Jianming Ma Jiangshan Liu Zhengwei Xie C S Ting |
| author_facet | Degang Zhang Zhihai Liu Jianming Ma Jiangshan Liu Zhengwei Xie C S Ting |
| author_sort | Degang Zhang |
| collection | DOAJ |
| description | The local electronic states around a single As (Te, Se) vacancy are investigated in order to shed light on the role of ligands in a series of iron-based superconductors. Such a vacancy can produce a local hopping correction ranging from −0.22 to 0.12 eV and always induce two in-gap resonance peaks in the local density of states (LDOS) at the fixed symmetrical bias voltages, which are rather robust and irrelevant to the phase of superconducting order parameter. The LDOS images near the defect predominantly possess 0° and 45° stripes. These energy-dependent charge modulations created by quasiparticle interference are originated in the nesting effect between the inner (outer) hole Fermi surface around Γ point and the inner (outer) electron Fermi surface around M point. |
| first_indexed | 2024-03-12T16:37:19Z |
| format | Article |
| id | doaj.art-46c73b53d59a45479b9e4cce45987ede |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:37:19Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
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| series | New Journal of Physics |
| spelling | doaj.art-46c73b53d59a45479b9e4cce45987ede2023-08-08T14:49:35ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120505200110.1088/1367-2630/aac54cNesting-induced local electronic patterns around a single As (Te, Se) vacancy in iron-based superconductorsDegang Zhang0Zhihai Liu1Jianming Ma2Jiangshan Liu3Zhengwei Xie4C S Ting5College of Physics and Electronic Engineering, Sichuan Normal University , Chengdu 610101, People’s Republic of China; Institute of Solid State Physics, Sichuan Normal University , Chengdu 610101, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University , Chengdu 610101, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University , Chengdu 610101, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University , Chengdu 610101, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University , Chengdu 610101, People’s Republic of China; Institute of Solid State Physics, Sichuan Normal University , Chengdu 610101, People’s Republic of ChinaTexas Center for Superconductivity and Department of Physics, University of Houston , Houston, TX 77204, United States of AmericaThe local electronic states around a single As (Te, Se) vacancy are investigated in order to shed light on the role of ligands in a series of iron-based superconductors. Such a vacancy can produce a local hopping correction ranging from −0.22 to 0.12 eV and always induce two in-gap resonance peaks in the local density of states (LDOS) at the fixed symmetrical bias voltages, which are rather robust and irrelevant to the phase of superconducting order parameter. The LDOS images near the defect predominantly possess 0° and 45° stripes. These energy-dependent charge modulations created by quasiparticle interference are originated in the nesting effect between the inner (outer) hole Fermi surface around Γ point and the inner (outer) electron Fermi surface around M point.https://doi.org/10.1088/1367-2630/aac54cFe-based superconductorsligand vacancynesting effect |
| spellingShingle | Degang Zhang Zhihai Liu Jianming Ma Jiangshan Liu Zhengwei Xie C S Ting Nesting-induced local electronic patterns around a single As (Te, Se) vacancy in iron-based superconductors New Journal of Physics Fe-based superconductors ligand vacancy nesting effect |
| title | Nesting-induced local electronic patterns around a single As (Te, Se) vacancy in iron-based superconductors |
| title_full | Nesting-induced local electronic patterns around a single As (Te, Se) vacancy in iron-based superconductors |
| title_fullStr | Nesting-induced local electronic patterns around a single As (Te, Se) vacancy in iron-based superconductors |
| title_full_unstemmed | Nesting-induced local electronic patterns around a single As (Te, Se) vacancy in iron-based superconductors |
| title_short | Nesting-induced local electronic patterns around a single As (Te, Se) vacancy in iron-based superconductors |
| title_sort | nesting induced local electronic patterns around a single as te se vacancy in iron based superconductors |
| topic | Fe-based superconductors ligand vacancy nesting effect |
| url | https://doi.org/10.1088/1367-2630/aac54c |
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