Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems

Electronic, magnetic, and transport properties of the noncollinear naturally multilayered compounds LaMn2Ge2 and LaMn 2Si2 are addressed by first-principles calculations based on the density-functional theory. At low temperatures, these systems show a magnetic state with the Mn moments ordered in a...

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Autores principales:	Di Napoli, Solange, Llois, Ana María
Publicado:	2004
Materias:	ferromagnetic material germanium lanthanum manganese silicon article calculation chemical structure density functional theory electronics energy ferromagnetism magnet magnet structure magnetism temperature
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n17_p1_DiNapoli http://hdl.handle.net/20.500.12110/paper_01631829_v70_n17_p1_DiNapoli
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01631829_v70_n17_p1_DiNapoli
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spelling	paper:paper_01631829_v70_n17_p1_DiNapoli2023-06-08T15:14:03Z Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems Di Napoli, Solange Llois, Ana María ferromagnetic material germanium lanthanum manganese silicon article calculation chemical structure density functional theory electronics energy ferromagnetism magnet magnet structure magnetism temperature Electronic, magnetic, and transport properties of the noncollinear naturally multilayered compounds LaMn2Ge2 and LaMn 2Si2 are addressed by first-principles calculations based on the density-functional theory. At low temperatures, these systems show a magnetic state with the Mn moments ordered in a conical arrangement (spin spiral) with a ferromagnetic coupling along the c axis and an in-plane antiferromagnetic coupling. The magnetic structures are studied by means of the full-potential linearized augmented-plane-wave method within both the generalized-gradient approximation and the local-density approximation. In both compounds, a conical magnetic state is obtained with energies lower than canted and collinear structures. The trends in the experimentally observed magnetic configuration when replacing Ge by Si are discussed. The origin of the experimentally observed inverse giant magnetoresistance in LaMn 2Ge2 is traced back to the presence of many noncollinear low-energy magnetic configurations. Fil:Di Napoli, S. 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. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n17_p1_DiNapoli http://hdl.handle.net/20.500.12110/paper_01631829_v70_n17_p1_DiNapoli
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	ferromagnetic material germanium lanthanum manganese silicon article calculation chemical structure density functional theory electronics energy ferromagnetism magnet magnet structure magnetism temperature
spellingShingle	ferromagnetic material germanium lanthanum manganese silicon article calculation chemical structure density functional theory electronics energy ferromagnetism magnet magnet structure magnetism temperature Di Napoli, Solange Llois, Ana María Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems
topic_facet	ferromagnetic material germanium lanthanum manganese silicon article calculation chemical structure density functional theory electronics energy ferromagnetism magnet magnet structure magnetism temperature
description	Electronic, magnetic, and transport properties of the noncollinear naturally multilayered compounds LaMn2Ge2 and LaMn 2Si2 are addressed by first-principles calculations based on the density-functional theory. At low temperatures, these systems show a magnetic state with the Mn moments ordered in a conical arrangement (spin spiral) with a ferromagnetic coupling along the c axis and an in-plane antiferromagnetic coupling. The magnetic structures are studied by means of the full-potential linearized augmented-plane-wave method within both the generalized-gradient approximation and the local-density approximation. In both compounds, a conical magnetic state is obtained with energies lower than canted and collinear structures. The trends in the experimentally observed magnetic configuration when replacing Ge by Si are discussed. The origin of the experimentally observed inverse giant magnetoresistance in LaMn 2Ge2 is traced back to the presence of many noncollinear low-energy magnetic configurations.
author	Di Napoli, Solange Llois, Ana María
author_facet	Di Napoli, Solange Llois, Ana María
author_sort	Di Napoli, Solange
title	Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems
title_short	Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems
title_full	Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems
title_fullStr	Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems
title_full_unstemmed	Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems
title_sort	magnetic structure and transport properties of noncollinear lamn 2x2 (x=ge,si) systems
publishDate	2004
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n17_p1_DiNapoli http://hdl.handle.net/20.500.12110/paper_01631829_v70_n17_p1_DiNapoli
work_keys_str_mv	AT dinapolisolange magneticstructureandtransportpropertiesofnoncollinearlamn2x2xgesisystems AT lloisanamaria magneticstructureandtransportpropertiesofnoncollinearlamn2x2xgesisystems
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Magnetic structure and transport properties of noncollinear LaMn 2X2 (X=Ge,Si) systems

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