Electronic and magnetic structures of Fe on a vicinal Au(1 1 1) surface

H. Fujisawa, S. Shiraki, M. Furukawa, M. Nantoh, Maki Kawai, T. Nakamura, T. Muro

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Magnetic behavior of Fe nanostructures on a vicinal Au(1 1 1) surface have been investigated by X-ray magnetic circular dichroism (XMCD) measurements. It is found that one-dimensional (1D) Fe chains of 2-3 atomic rows exhibit a ferromagnetic long-range order, and have a larger orbital moment in comparison with stripes and two-dimensional (2D) nanostructures. From the temperature-dependent XMCD measurements, the 1D chains exhibit two phase transitions, which are qualitatively ascribed to a ferromagnetic-to- superparamagnetic and a superparamagnetic-to-paramagnetic phase transions. These results suggest that the magnetism of the 1D chains behaves superparamagnetically.

Original languageEnglish
Pages (from-to)519-523
Number of pages5
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume144-147
DOIs
Publication statusPublished - 2005 Jun

Keywords

  • Au
  • Fe
  • Ferromagnetism
  • Nanowire X-ray magnetic circular dichroism
  • Vicinal surface

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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