Realizing Haldane model in Fe-based honeycomb ferromagnetic insulators

Condensed-matter physics: materials for Haldane model The topological Haldane model (FHM) on a honeycomb lattice describes a mechanism through which a quantum Hall effect can emerge as an intrinsic property from the band structure in the absence of an external magnetic field. Despite its simplicity,...

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Autores principales:	Heung-Sik Kim, Hae-Young Kee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/02884c5459504b54bb973bb88cfee135
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spelling	oai:doaj.org-article:02884c5459504b54bb973bb88cfee1352021-12-02T16:05:44ZRealizing Haldane model in Fe-based honeycomb ferromagnetic insulators10.1038/s41535-017-0021-z2397-4648https://doaj.org/article/02884c5459504b54bb973bb88cfee1352017-04-01T00:00:00Zhttps://doi.org/10.1038/s41535-017-0021-zhttps://doaj.org/toc/2397-4648Condensed-matter physics: materials for Haldane model The topological Haldane model (FHM) on a honeycomb lattice describes a mechanism through which a quantum Hall effect can emerge as an intrinsic property from the band structure in the absence of an external magnetic field. Despite its simplicity, this model has proved to be challenging in the physical implementation. A team led by Hae-Young Kee at Canada’s University of Toronto proposed a way to search for realistic materials to experimentally realize the THM showing that effectively spinless fermion with complex next nearest neighbour hopping integrals can be found in ferromagnetic insulators with strong Hund’s coupling and finite spin orbital coupling. The authors suggest that a series of iron based honeycomb ferromagnetic insulators in the form of AFe2(PO4)2 (A=Ba, Cs, K and La) possess Chern bands featured by the THM. This work provides a playground for the identification of new correlated topological materials.Heung-Sik KimHae-Young KeeNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 2, Iss 1, Pp 1-5 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Heung-Sik Kim Hae-Young Kee Realizing Haldane model in Fe-based honeycomb ferromagnetic insulators
description	Condensed-matter physics: materials for Haldane model The topological Haldane model (FHM) on a honeycomb lattice describes a mechanism through which a quantum Hall effect can emerge as an intrinsic property from the band structure in the absence of an external magnetic field. Despite its simplicity, this model has proved to be challenging in the physical implementation. A team led by Hae-Young Kee at Canada’s University of Toronto proposed a way to search for realistic materials to experimentally realize the THM showing that effectively spinless fermion with complex next nearest neighbour hopping integrals can be found in ferromagnetic insulators with strong Hund’s coupling and finite spin orbital coupling. The authors suggest that a series of iron based honeycomb ferromagnetic insulators in the form of AFe2(PO4)2 (A=Ba, Cs, K and La) possess Chern bands featured by the THM. This work provides a playground for the identification of new correlated topological materials.
format	article
author	Heung-Sik Kim Hae-Young Kee
author_facet	Heung-Sik Kim Hae-Young Kee
author_sort	Heung-Sik Kim
title	Realizing Haldane model in Fe-based honeycomb ferromagnetic insulators
title_short	Realizing Haldane model in Fe-based honeycomb ferromagnetic insulators
title_full	Realizing Haldane model in Fe-based honeycomb ferromagnetic insulators
title_fullStr	Realizing Haldane model in Fe-based honeycomb ferromagnetic insulators
title_full_unstemmed	Realizing Haldane model in Fe-based honeycomb ferromagnetic insulators
title_sort	realizing haldane model in fe-based honeycomb ferromagnetic insulators
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/02884c5459504b54bb973bb88cfee135
work_keys_str_mv	AT heungsikkim realizinghaldanemodelinfebasedhoneycombferromagneticinsulators AT haeyoungkee realizinghaldanemodelinfebasedhoneycombferromagneticinsulators
_version_	1718385126816088064

Realizing Haldane model in Fe-based honeycomb ferromagnetic insulators

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