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

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: Ferrari, Valeria Paola, Llois, Ana María
Publicado: 2015
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v92_n7_p_Helman
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 paper:paper_10980121_v92_n7_p_Helman2023-06-08T16:07:58Z Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs Ferrari, Valeria Paola Llois, Ana María 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. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v92_n7_p_Helman 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.
author Ferrari, Valeria Paola
Llois, Ana María
spellingShingle Ferrari, Valeria Paola
Llois, Ana María
Arsenic-bridged magnetic interactions in an emerging two-dimensional FeAs nanostructure on MnAs
author_facet Ferrari, Valeria Paola
Llois, Ana María
author_sort Ferrari, Valeria Paola
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
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v92_n7_p_Helman
http://hdl.handle.net/20.500.12110/paper_10980121_v92_n7_p_Helman
work_keys_str_mv AT ferrarivaleriapaola arsenicbridgedmagneticinteractionsinanemergingtwodimensionalfeasnanostructureonmnas
AT lloisanamaria arsenicbridgedmagneticinteractionsinanemergingtwodimensionalfeasnanostructureonmnas
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