Ferromagnetic Coupling of Mononuclear Fe Centers in a Self-Assembled Metal-Organic Network on Au(111)

T. R. Umbach, M. Bernien, C. F. Hermanns, A. Krüger, V. Sessi, I. Fernandez-Torrente, P. Stoll, J. I. Pascual, K. J. Franke, and W. Kuch

Phys. Rev. Lett. 109, 267207 – Published 26 December 2012; Erratum Phys. Rev. Lett. 112, 139901 (2014)

Abstract

The magnetic state and magnetic coupling of individual atoms in nanoscale structures relies on a delicate balance between different interactions with the atomic-scale surroundings. Using scanning tunneling microscopy, we resolve the self-assembled formation of highly ordered bilayer structures of Fe atoms and organic linker molecules (T4PT) when deposited on a Au(111) surface. The Fe atoms are encaged in a three-dimensional coordination motif by three T4PT molecules in the surface plane and an additional T4PT unit on top. Within this crystal field, the Fe atoms retain a magnetic ground state with easy-axis anisotropy, as evidenced by x-ray absorption spectroscopy and x-ray magnetic circular dichroism. The magnetization curves reveal the existence of ferromagnetic coupling between the Fe centers.

Received 27 August 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.267207

Erratum

Erratum: Ferromagnetic Coupling of Mononuclear Fe Centers in a Self-Assembled Metal-Organic Network on Au(111) [Phys. Rev. Lett. 109, 267207 (2012)]

T. R. Umbach, M. Bernien, C. F. Hermanns, A. Krüger, V. Sessi, I. Fernandez-Torrente, P. Stoll, J. I. Pascual, K. J. Franke, and W. Kuch

Phys. Rev. Lett. 112, 139901 (2014)

Authors & Affiliations

T. R. Umbach¹, M. Bernien¹, C. F. Hermanns¹, A. Krüger¹, V. Sessi², I. Fernandez-Torrente¹, P. Stoll^1,3, J. I. Pascual^1,3,4, K. J. Franke^1,3,5, and W. Kuch^1,3

¹Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany
²European Synchrotron Radiation Facility, PB 220, 38043 Grenoble, France
³Center for Supramolecular Interactions, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
⁴CIC nanoGUNE, 20018 Donostia-San Sebastian, Spain, and Ikerbasque, Basque Foundation for Science, 48011 Bilbao, Spain
⁵Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany

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Vol. 109, Iss. 26 — 28 December 2012

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