Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates
Abstract The enhanced superconductivity in monolayer FeSe on titanates opens a fascinating pathway toward the rational design of high‐temperature superconductors. Utilizing the state‐of‐the‐art oxide plus chalcogenide molecular beam epitaxy systems in situ connected to a synchrotron angle‐resolved p...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-05-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202003454 |
| _version_ | 1819053031195410432 |
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| author | Tao Jia Zhuoyu Chen Slavko N. Rebec Makoto Hashimoto Donghui Lu Thomas P. Devereaux Dung‐Hai Lee Robert G. Moore Zhi‐Xun Shen |
| author_facet | Tao Jia Zhuoyu Chen Slavko N. Rebec Makoto Hashimoto Donghui Lu Thomas P. Devereaux Dung‐Hai Lee Robert G. Moore Zhi‐Xun Shen |
| author_sort | Tao Jia |
| collection | DOAJ |
| description | Abstract The enhanced superconductivity in monolayer FeSe on titanates opens a fascinating pathway toward the rational design of high‐temperature superconductors. Utilizing the state‐of‐the‐art oxide plus chalcogenide molecular beam epitaxy systems in situ connected to a synchrotron angle‐resolved photoemission spectroscope, epitaxial LaTiO3 layers with varied atomic thicknesses are inserted between monolayer FeSe and SrTiO3, for systematic modulation of interfacial chemical potential. With the dramatic increase of electron accumulation at the LaTiO3/SrTiO3 surface, providing a substantial surge of work function mismatch across the FeSe/oxide interface, the charge transfer and the superconducting gap in the monolayer FeSe are found to remain markedly robust. This unexpected finding indicate the existence of an intrinsically anchored “magic” doping within the monolayer FeSe systems. |
| first_indexed | 2024-12-21T12:29:16Z |
| format | Article |
| id | doaj.art-83c3eada8c5243cbb32f0313d9fb2b5c |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-21T12:29:16Z |
| publishDate | 2021-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-83c3eada8c5243cbb32f0313d9fb2b5c2022-12-21T19:04:04ZengWileyAdvanced Science2198-38442021-05-0189n/an/a10.1002/advs.202003454Magic Doping and Robust Superconductivity in Monolayer FeSe on TitanatesTao Jia0Zhuoyu Chen1Slavko N. Rebec2Makoto Hashimoto3Donghui Lu4Thomas P. Devereaux5Dung‐Hai Lee6Robert G. Moore7Zhi‐Xun Shen8Stanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USAStanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USAStanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USAStanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USAStanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USAStanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USADepartment of Physics University of California at Berkeley Berkeley CA 94720 USAMaterials Science and Technology Division Oak Ridge National Laboratory Oak Ridge TN 37831 USAStanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USAAbstract The enhanced superconductivity in monolayer FeSe on titanates opens a fascinating pathway toward the rational design of high‐temperature superconductors. Utilizing the state‐of‐the‐art oxide plus chalcogenide molecular beam epitaxy systems in situ connected to a synchrotron angle‐resolved photoemission spectroscope, epitaxial LaTiO3 layers with varied atomic thicknesses are inserted between monolayer FeSe and SrTiO3, for systematic modulation of interfacial chemical potential. With the dramatic increase of electron accumulation at the LaTiO3/SrTiO3 surface, providing a substantial surge of work function mismatch across the FeSe/oxide interface, the charge transfer and the superconducting gap in the monolayer FeSe are found to remain markedly robust. This unexpected finding indicate the existence of an intrinsically anchored “magic” doping within the monolayer FeSe systems.https://doi.org/10.1002/advs.202003454FeSeheterostructuresinterfacial charge transfermagic dopingsuperconductors |
| spellingShingle | Tao Jia Zhuoyu Chen Slavko N. Rebec Makoto Hashimoto Donghui Lu Thomas P. Devereaux Dung‐Hai Lee Robert G. Moore Zhi‐Xun Shen Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates Advanced Science FeSe heterostructures interfacial charge transfer magic doping superconductors |
| title | Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates |
| title_full | Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates |
| title_fullStr | Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates |
| title_full_unstemmed | Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates |
| title_short | Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates |
| title_sort | magic doping and robust superconductivity in monolayer fese on titanates |
| topic | FeSe heterostructures interfacial charge transfer magic doping superconductors |
| url | https://doi.org/10.1002/advs.202003454 |
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