Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs

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The extreme case of an Fe monolayer deposited onto a manganese arsenide (MnAs) substrate is analyzed using density functional theory. We find that an FeAs quasi-two-dimensional antiferromagnetic surface nanostructure emerges. This nanostructure, which is magnetically nearly decoupled from the substr...

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Autores principales: Helman, C., Ferrari, V., Llois, A.M.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10980121_v92_n7_p_Helman
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_10980121_v92_n7_p_Helman2023-10-03T16:06:30Z Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs Helman, C. Ferrari, V. Llois, A.M. The extreme case of an Fe monolayer deposited onto a manganese arsenide (MnAs) substrate is analyzed using density functional theory. We find that an FeAs quasi-two-dimensional antiferromagnetic surface nanostructure emerges. This nanostructure, which is magnetically nearly decoupled from the substrate, is due to bonding effects arising from the arsenic atoms bridging the Fe magnetic interactions. These interactions are studied and modeled using a Heisenberg-type Hamiltonian. They display an angular dependence which is characteristic of superexchange-like interactions, which are of the same order of magnitude as those appearing in Fe-based pnictides. © 2015 American Physical Society. Fil:Ferrari, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Llois, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10980121_v92_n7_p_Helman
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The extreme case of an Fe monolayer deposited onto a manganese arsenide (MnAs) substrate is analyzed using density functional theory. We find that an FeAs quasi-two-dimensional antiferromagnetic surface nanostructure emerges. This nanostructure, which is magnetically nearly decoupled from the substrate, is due to bonding effects arising from the arsenic atoms bridging the Fe magnetic interactions. These interactions are studied and modeled using a Heisenberg-type Hamiltonian. They display an angular dependence which is characteristic of superexchange-like interactions, which are of the same order of magnitude as those appearing in Fe-based pnictides. © 2015 American Physical Society.
format JOUR
author Helman, C.
Ferrari, V.
Llois, A.M.
spellingShingle Helman, C.
Ferrari, V.
Llois, A.M.
Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs
author_facet Helman, C.
Ferrari, V.
Llois, A.M.
author_sort Helman, C.
title Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs
title_short Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs
title_full Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs
title_fullStr Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs
title_full_unstemmed Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs
title_sort arsenic-bridged magnetic interactions in an emerging two-dimensional feas nanostructure on mnas
url http://hdl.handle.net/20.500.12110/paper_10980121_v92_n7_p_Helman
work_keys_str_mv AT helmanc arsenicbridgedmagneticinteractionsinanemergingtwodimensionalfeasnanostructureonmnas
AT ferrariv arsenicbridgedmagneticinteractionsinanemergingtwodimensionalfeasnanostructureonmnas
AT lloisam arsenicbridgedmagneticinteractionsinanemergingtwodimensionalfeasnanostructureonmnas
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