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Two-dimensional metal-organic coordination networks of Mn-7,7,8,8-tetracyanoquinodimethane assembled on Cu(100): Structural, electronic, and magnetic properties
Physical Review B - Condensed Matter and Materials Physics (2009)
  • Tsu-Chun Tseng, Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
  • Chensheng Lin, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China
  • X.Q. Shi, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China
  • Steven L. Tait, Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
  • Xiong Liu, Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
  • Ulrich Starke, Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
  • Nian Lin, Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
  • R.Q. Zhang, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China
  • C. Minot, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China
  • M.A. Van Hove, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China
  • J.I. Cerdá, Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, Cantoblanco, 28049 Madrid, Spain
  • Klaus Kern, Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
Abstract
A compound two-dimensional 2D monolayer mixing Mn atoms and 7,7,8,8-tetracyanoquinodimethane (TCNQ) molecules was synthesized by supramolecular assembly on a Cu100 surface under ultrahigh vacuum conditions. Its structural, electronic, and magnetic properties were analyzed by scanning tunneling microscopy experiment and theory, low-energy electron diffraction, x-ray photoemission spectroscopy, and densityfunctional theory calculations. The 2D compound has a long-range ordered square planar network structure consisting of fourfold coordinated Mn centers with a Mn:TCNQ ratio of 1:2. The electronic-state analysis revealed a complex charge-transfer scenario indicating strong bonding of TCNQ with both the Mn adsorbates and the Cu surface atoms. The calculations reveal that the Mn centers carry a magnetic moment close to 5µB with very weak coupling between adjacent Mn centers.
Disciplines
Publication Date
2009
DOI
10.1103/PhysRevB.80.155458
Publisher Statement
Publisher version is archived on this website.
Citation Information
Tsu-Chun Tseng, Chensheng Lin, X.Q. Shi, Steven L. Tait, et al.. "Two-dimensional metal-organic coordination networks of Mn-7,7,8,8-tetracyanoquinodimethane assembled on Cu(100): Structural, electronic, and magnetic properties" Physical Review B - Condensed Matter and Materials Physics Vol. 80 Iss. 15 (2009) p. 155458-1 - 155458-6 ISSN: 1550235X
Available at: http://works.bepress.com/mavanhove/93/