%0 Journal Article
%A Lounis, S.
%A Dederichs, P. H.
%A Blügel, S.
%T Magnetism of Nanowires Driven by Novel Even-Odd Effects
%J Physical review letters
%V 101
%@ 0031-9007
%C College Park, Md.
%I APS
%M PreJuSER-467
%P 107204
%D 2008
%Z We thank Dr. Mavropoulos for fruitful discussions. This work was supported by the ESF EUROCORES Programme SONS under Contract No. ERAS-CT-2003-980409 and the DFG Priority Programme SPP1153.
%X The parity of the number of atoms in finite antiferromagnetic nanowires deposited on ferromagnets is shown to be a crucial quantity determining their magnetic ground state. Relating results of the full-potential Korringa-Kohn-Rostoker method for noncollinear magnetism from first principles to a Heisenberg model, we show that the magnetic structure changes dramatically across the entire nanowire if one single atom is added to it. Infinite and finite even-numbered nanochains exhibit always noncollinear magnetism, while odd-numbered wires lead under given conditions to a collinear ferrimagnetic ground state. This extremely nonlocal effect occurs only for nanosized wires.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000258975100060
%R 10.1103/PhysRevLett.101.107204
%U https://juser.fz-juelich.de/record/467