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Noncollinear magnetism in manganese nanostructures

SYSNO ASEP	0331521
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Noncollinear magnetism in manganese nanostructures
Title	Nekolineární magnetismus manganových nanostruktur
Author(s)	Zelený, Martin (UFM-A) Šob, Mojmír (UFM-A)_{RID, ORCID} Hafner, J. (AT)
Number of authors	3
Source Title	Physical Review. B - ISSN 1098-0121 Roč. 80, č. 14 (2009), 144414/1-144414/19
Number of pages	19 s.
Language	eng - English
Country	US - United States
Keywords	magnetism of nanostructures ; nanowires ; noncollinear magnetism ; manganese
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	IAA100100920 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	OC09011 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000271351500071
DOI	10.1103/PhysRevB.80.144414
Annotation	We present ab initio spin-density-functional calculations of the magnetic properties of Mn nanostructures with a geometry varying between a straight linear wire and a three-dimensional nanorod, including collinear and noncollinear, commensurate and incommensurate magnetic configurations. With decreasing tension along the axis of the nanostructure we find a series of transitions first from a straight to a zigzag wire, then to planar triangular or hexagonal stripes and further to a nanorod consisting of a periodic stacking of distorted octahedra. At local equilibrium all nanostructures are in a high-moment state, with absolute values of the local magnetic moments per atom varying between 2.96-3.79μB. Collinear and noncollinear magnetic structures are energetically nearly degenerate, if the geometric and magnetic degrees of freedom are relaxed simultaneously. Compression of the nanostructures leads to a decrease in the magnetic moments.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2010

Number of the records: 1