Long-range ferromagnetic order in one-dimensional monatomic Co-chains

Gambardell, P. ; Dallmeyer, A. ; Maiti, K. ; Malagoli, M. C. ; Eberhardt, W. ; Kern, K. ; Carbone, C. (2005) Long-range ferromagnetic order in one-dimensional monatomic Co-chains International Journal of Nanoscience, 04 (05n06). p. 1029. ISSN 0219-581X

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Official URL: http://www.worldscientific.com/doi/abs/10.1142/S02...

Related URL: http://dx.doi.org/10.1142/S0219581X05004029


Magnetism in low dimensions is a challenging problem for long time. As the dimensionality of the systems reduces, the fluctuations become more important and hence, the magnetic ordering tends to decrease. We find that one-dimensional monatomic chains of Co constructed on a Pt substrate exhibit long-range order below a threshold temperature in contrast to various theoretical results and expectations. The Co-chains have large localized orbital moment compared to that in the two-dimensional films and bulk Co. Therefore, the magnetic anisotropy energy is significantly large in this case. Thus, the observation of long-range ferromagnetic order in Co-chains may be attributed to the presence of anisotropy barriers due to the substrate.

Item Type:Article
Source:Copyright of this article belongs to World Scientific Publishing Co Pte Ltd.
Keywords:Long-Range Order; Low Dimensional Systems; Magnetic Anisotropy
ID Code:95842
Deposited On:23 Nov 2012 12:10
Last Modified:23 Nov 2012 12:10

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