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Structure of Self-Assembled Mn Atom Chains on Si(001) |
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Published in | Physical review letters. 2015, vol. 115, no. 25, 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 | |
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Research group | Groupe Renner | |
Project | Swiss National Science Foundation: 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 |