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Originally published in Science Express on 30 March 2006
Science 19 May 2006:
Vol. 312. no. 5776, pp. 1021 - 1024
DOI: 10.1126/science.1125398
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Reports

Spin Coupling in Engineered Atomic Structures

Cyrus F. Hirjibehedin,* Christopher P. Lutz, Andreas J. Heinrich

We used a scanning tunneling microscope to probe the interactions between spins in individual atomic-scale magnetic structures. Linear chains of 1 to 10 manganese atoms were assembled one atom at a time on a thin insulating layer, and the spin excitation spectra of these structures were measured with inelastic electron tunneling spectroscopy. We observed excitations of the coupled atomic spins that can change both the total spin and its orientation. Comparison with a model spin-interaction Hamiltonian yielded the collective spin configuration and the strength of the coupling between the atomic spins.

IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120, USA.

* To whom correspondence should be addressed. E-mail: hirjibe{at}us.ibm.com

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
The Force Needed to Move an Atom on a Surface.
M. Ternes, C. P. Lutz, C. F. Hirjibehedin, F. J. Giessibl, and A. J. Heinrich (2008)
Science 319, 1066-1069
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Large Magnetic Anisotropy of a Single Atomic Spin Embedded in a Surface Molecular Network.
C. F. Hirjibehedin, C.-Y. Lin, A. F. Otte, M. Ternes, C. P. Lutz, B. A. Jones, and A. J. Heinrich (2007)
Science 317, 1199-1203
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