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Antiferromagnetic FeSe monolayer on SrTiO(3): The charge doping and electric field effects
By growing monolayer FeSe on SrTiO(3)(001) surface, researchers obtain the highest superconducting transition-temperature for iron-based superconductor. Here, we study the antiferromagnetic (AFM) checkerboard monolayer FeSe adsorbed on SrTiO(3)(001) surface. We show that the system has a considerabl...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3714653/ https://www.ncbi.nlm.nih.gov/pubmed/23863890 http://dx.doi.org/10.1038/srep02213 |
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author | Zheng, Fawei Wang, Zhigang Kang, Wei Zhang, Ping |
author_facet | Zheng, Fawei Wang, Zhigang Kang, Wei Zhang, Ping |
author_sort | Zheng, Fawei |
collection | PubMed |
description | By growing monolayer FeSe on SrTiO(3)(001) surface, researchers obtain the highest superconducting transition-temperature for iron-based superconductor. Here, we study the antiferromagnetic (AFM) checkerboard monolayer FeSe adsorbed on SrTiO(3)(001) surface. We show that the system has a considerable charge transfer from SrTiO(3)(001) substrate to FeSe monolayer, and so has a self-constructed electric field. The FeSe monolayer band structure near the Brillouin zone (BZ) center is sensitive to charge doping, and the spin-resolved energy bands at BZ corner are distorted to be flattened by the perpendicular electric field. It is revealed that the striking disappearance of the Fermi surface around the BZ center can be well explained by the AFM checkerboard phase with charge doping and electric field effects. We propose a tight-binding model Hamiltonian to take these key factors into account. We also show that this composite structure is an ideal electron-hole bilayer system, with electrons and holes respectively formed in FeSe monolayer and TiO(2) surface layer. |
format | Online Article Text |
id | pubmed-3714653 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-37146532013-07-18 Antiferromagnetic FeSe monolayer on SrTiO(3): The charge doping and electric field effects Zheng, Fawei Wang, Zhigang Kang, Wei Zhang, Ping Sci Rep Article By growing monolayer FeSe on SrTiO(3)(001) surface, researchers obtain the highest superconducting transition-temperature for iron-based superconductor. Here, we study the antiferromagnetic (AFM) checkerboard monolayer FeSe adsorbed on SrTiO(3)(001) surface. We show that the system has a considerable charge transfer from SrTiO(3)(001) substrate to FeSe monolayer, and so has a self-constructed electric field. The FeSe monolayer band structure near the Brillouin zone (BZ) center is sensitive to charge doping, and the spin-resolved energy bands at BZ corner are distorted to be flattened by the perpendicular electric field. It is revealed that the striking disappearance of the Fermi surface around the BZ center can be well explained by the AFM checkerboard phase with charge doping and electric field effects. We propose a tight-binding model Hamiltonian to take these key factors into account. We also show that this composite structure is an ideal electron-hole bilayer system, with electrons and holes respectively formed in FeSe monolayer and TiO(2) surface layer. Nature Publishing Group 2013-07-18 /pmc/articles/PMC3714653/ /pubmed/23863890 http://dx.doi.org/10.1038/srep02213 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
spellingShingle | Article Zheng, Fawei Wang, Zhigang Kang, Wei Zhang, Ping Antiferromagnetic FeSe monolayer on SrTiO(3): The charge doping and electric field effects |
title | Antiferromagnetic FeSe monolayer on SrTiO(3): The charge doping and electric field effects |
title_full | Antiferromagnetic FeSe monolayer on SrTiO(3): The charge doping and electric field effects |
title_fullStr | Antiferromagnetic FeSe monolayer on SrTiO(3): The charge doping and electric field effects |
title_full_unstemmed | Antiferromagnetic FeSe monolayer on SrTiO(3): The charge doping and electric field effects |
title_short | Antiferromagnetic FeSe monolayer on SrTiO(3): The charge doping and electric field effects |
title_sort | antiferromagnetic fese monolayer on srtio(3): the charge doping and electric field effects |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3714653/ https://www.ncbi.nlm.nih.gov/pubmed/23863890 http://dx.doi.org/10.1038/srep02213 |
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