Self-Organized Growth, Structure, and Magnetism of Monatomic Transition-Metal Oxide Chains

Ferstl P, Hammer L, Sobel C, Gubo M, Heinz K, Schneider MA, Mittendorfer F, Redinger J (2016)

Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2016

Journal

Physical Review Letters American Physical Society

Publisher: American Physical Society

Book Volume: 117

Article Number: 046101

Journal Issue: 4

DOI: 10.1103/PhysRevLett.117.046101

Abstract

We report on the self-organized growth of monatomic transition-metal oxide chains of (3×1) periodicity and unusual MO2 stoichiometry (M=Ni, Co, Fe, Mn) on Ir(100). We analyze their structural and magnetic properties by means of quantitative LEED, STM, and density functional theory (DFT) calculations. LEED analyses reveal a fascinating common atomic structure in which the transition-metal atoms sit above a missing-row structure of the surface and are coupled to the substrate only via oxygen atoms. This structure is confirmed by DFT calculations with structural parameters deviating by less than 1.7 pm. The DFT calculations predict that the NiO2 chains are nonmagnetic, CoO2 chains are ferromagnetic, while FeO2 and MnO2 are antiferromagnetic. All structures show only weak magnetic interchain coupling. Further, we demonstrate the growth of oxide chains of binary alloys of Co and Ni or Fe on Ir(100), which allows us to produce well-controlled ensembles of ferromagnetic chains of different lengths separated by nonmagnetic or antiferromagnetic segments.

Authors with CRIS profile

Pascal Ferstl Professur für Experimentalphysik Lutz Hammer Lehrstuhl für Festkörperphysik Klaus Heinz Naturwissenschaftliche Fakultät Alexander Schneider Professur für Experimentalphysik

Involved external institutions

Technische Universität Wien / Vienna University of Technology AT Austria (AT)

How to cite

APA:

Ferstl, P., Hammer, L., Sobel, C., Gubo, M., Heinz, K., Schneider, M.A.,... Redinger, J. (2016). Self-Organized Growth, Structure, and Magnetism of Monatomic Transition-Metal Oxide Chains. Physical Review Letters, 117(4). https://dx.doi.org/10.1103/PhysRevLett.117.046101

MLA:

Ferstl, Pascal, et al. "Self-Organized Growth, Structure, and Magnetism of Monatomic Transition-Metal Oxide Chains." Physical Review Letters 117.4 (2016).

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