This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.75.174436 in citations.
Please use the identifier: http://hdl.handle.net/2128/7683 in citations.
Noncollinear magnetism of Cr and Mn nanoclusters on Ni(111): Changing the magnetic configuration atom by atom
Noncollinear magnetism of Cr and Mn nanoclusters on Ni(111): Changing the magnetic configuration atom by atom
The Korringa-Kohn-Rostoker Green-function method for noncollinear magnetic structures was applied on Mn and Cr nanoclusters deposited on the Ni(111) surface. We consider various dimers, trimers, and tetramers. We obtain collinear and noncollinear magnetic solutions, brought about by the competition...
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Personal Name(s): | Lounis, S. |
---|---|
Mavropoulos, Ph. / Zeller, R. / Dederichs, P. H. / Blügel, S. | |
Contributing Institute: |
JARA-FIT; JARA-FIT Theorie der Strukturbildung; IFF-3 Quanten-Theorie der Materialien; IFF-1 Center of Nanoelectronic Systems for Information Technology; CNI Jülich-Aachen Research Alliance - Simulation Sciences; JARA-SIM |
Published in: | Physical Review B Physical review / B, 75 75 (2007 2007) 17 17, S. 174436 174436 |
Imprint: |
College Park, Md.
APS
2007
|
Physical Description: |
174436 |
DOI: |
10.1103/PhysRevB.75.174436 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Physical Review B
75 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/7683 in citations.
The Korringa-Kohn-Rostoker Green-function method for noncollinear magnetic structures was applied on Mn and Cr nanoclusters deposited on the Ni(111) surface. We consider various dimers, trimers, and tetramers. We obtain collinear and noncollinear magnetic solutions, brought about by the competition of antiferromagnetic interactions. It is found that the triangular geometry of the Ni(111) substrate, together with the intracluster antiferromagnetic interactions, is the main cause of the noncollinear states, which are secondarily affected by the cluster-substrate exchange interactions. The stabilization energy of the noncollinear, compared to the collinear, states is calculated to be typically of the order of 100 meV/atom, while multiple local-energy minima are found, corresponding to different noncollinear states, differing typically by 1-10 meV/atom. Open structures exhibit sizable total moments, while compact clusters tend to have very small total moments, resulting from the complex frustration mechanisms in these systems. |