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 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.
- Authors:
-
[1];
- Stanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USA, Departments of Physics, Applied Physics, and Materials Science and Engineering Geballe Laboratory for Advanced Materials Stanford University Stanford CA 94305 USA
- Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
- Department of Physics University of California at Berkeley Berkeley CA 94720 USA, Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL); Stanford Univ., CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1765936
- Alternate Identifier(s):
- OSTI ID: 1760025; OSTI ID: 1766403; OSTI ID: 1785842
- Grant/Contract Number:
- AC05-00OR22725; AC02-76SF00515; AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Advanced Science
- Additional Journal Information:
- Journal Name: Advanced Science; Journal ID: ISSN 2198-3844
- Publisher:
- Wiley
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; FeSe; heterostructures; interfacial charge transfer; magic doping; superconductors
Citation Formats
Jia, Tao, Chen, Zhuoyu, Rebec, Slavko N., Hashimoto, Makoto, Lu, Donghui, Devereaux, Thomas P., Lee, Dung‐Hai, Moore, Robert G., and Shen, Zhi‐Xun. Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates. Germany: N. p., 2021.
Web. doi:10.1002/advs.202003454.
Jia, Tao, Chen, Zhuoyu, Rebec, Slavko N., Hashimoto, Makoto, Lu, Donghui, Devereaux, Thomas P., Lee, Dung‐Hai, Moore, Robert G., & Shen, Zhi‐Xun. Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates. Germany. https://doi.org/10.1002/advs.202003454
Jia, Tao, Chen, Zhuoyu, Rebec, Slavko N., Hashimoto, Makoto, Lu, Donghui, Devereaux, Thomas P., Lee, Dung‐Hai, Moore, Robert G., and Shen, Zhi‐Xun. Sun .
"Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates". Germany. https://doi.org/10.1002/advs.202003454.
@article{osti_1765936,
title = {Magic Doping and Robust Superconductivity in Monolayer FeSe on Titanates},
author = {Jia, Tao and Chen, Zhuoyu and Rebec, Slavko N. and Hashimoto, Makoto and Lu, Donghui and Devereaux, Thomas P. and Lee, Dung‐Hai and Moore, Robert G. and Shen, Zhi‐Xun},
abstractNote = {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.},
doi = {10.1002/advs.202003454},
journal = {Advanced Science},
number = ,
volume = ,
place = {Germany},
year = {Sun Feb 14 00:00:00 EST 2021},
month = {Sun Feb 14 00:00:00 EST 2021}
}
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