Thickness-dependent appearance of ferromagnetism in Pd(100) ultrathin films

S. Sakuragi, T. Sakai, S. Urata, S. Aihara, A. Shinto, H. Kageshima, M. Sawada, H. Namatame, M. Taniguchi, Tetsuya Sato

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We report the appearance of ferromagnetism in thin films of Pd(100), which depends on film thickness in the range of 3-5 nm on SrTiO3(100) substrates. X-ray magnetic circular dichroism measurement shows the intrinsic nature of ferromagnetism in Pd(100) films. The spontaneous magnetization in Pd(100) films, corresponding to is 0.61μB/atom, is comparable to Ni, and it changes in an oscillatory manner depending on film thickness, where the period quantitatively agrees with the theoretical prediction based on the two-dimensional quantum well in the film. This indicates that the discrete electronic states in the quantum well shift to Fermi energy to satisfy the condition for ferromagnetism (Stoner criterion) at a specific film thickness.

Original languageEnglish
Article number054411
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number5
DOIs
Publication statusPublished - 2014 Aug 18

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Fingerprint Dive into the research topics of 'Thickness-dependent appearance of ferromagnetism in Pd(100) ultrathin films'. Together they form a unique fingerprint.

  • Cite this

    Sakuragi, S., Sakai, T., Urata, S., Aihara, S., Shinto, A., Kageshima, H., Sawada, M., Namatame, H., Taniguchi, M., & Sato, T. (2014). Thickness-dependent appearance of ferromagnetism in Pd(100) ultrathin films. Physical Review B - Condensed Matter and Materials Physics, 90(5), [054411]. https://doi.org/10.1103/PhysRevB.90.054411