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

Villarreal, Renan; Longobardi, Maria; Köster, S. A.; Kirkham, Ch. J.; Bowler, D.; Renner, Christoph

doi:10.1103/PhysRevLett.115.256104

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Title		Structure of Self-Assembled Mn Atom Chains on Si(001)
Authors		Villarreal, Renan Longobardi, Maria Köster, S. A. Kirkham, Ch. J. Bowler, D. Renner, Christoph
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 chains — Mn chains — One-dimensional systems — Scanning probe microscopy
Identifiers		DOI: 10.1103/PhysRevLett.115.256104
Full text		Article (Published version) (676 Kb) - Free access
Structures		Faculté des sciences / Section de physique / Département de physique de la matière quantique
Research group		Groupe Renner
Project		FNS: 144139
Citation (ISO format)		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. doi: 10.1103/PhysRevLett.115.256104 https://archive-ouverte.unige.ch/unige:78890