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Structure of Self-Assembled Mn Atom Chains on Si(001)

Köster, S. A.
Kirkham, Ch. J.
Bowler, D.
Published in Physical Review Letters. 2015, vol. 115, no. 25, p. 256104
Abstract Mn has been found to self-assemble into atomic chains running perpendicular to the surface dimer reconstruction on Si(001). They differ from other atomic chains by a striking asymmetric appearance in filled state scanning tunneling microscopy (STM) images. This has prompted complicated structural models involving up to three Mn atoms per chain unit. Combining STM, atomic force microscopy, and density functional theory we find that a simple necklacelike chain of single Mn atoms reproduces all their prominent features, including their asymmetry not captured by current models. The upshot is a remarkably simpler structure for modeling the electronic and magnetic properties of Mn atom chains on Si(001).
Keywords Single atom chainsMn chainsOne-dimensional systemsScanning probe microscopy
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Research group Groupe Renner
Project FNS: 144139
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VILLARREAL, Renan et al. Structure of Self-Assembled Mn Atom Chains on Si(001). In: Physical Review Letters, 2015, vol. 115, n° 25, p. 256104. https://archive-ouverte.unige.ch/unige:78890

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Deposited on : 2015-12-22

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