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

10 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

Fingerprint

Ultrathin films
Ferromagnetism
ferromagnetism
Film thickness
film thickness
Semiconductor quantum wells
quantum wells
Dichroism
Electronic states
Fermi level
dichroism
Magnetization
rocks
X rays
Thin films
Atoms
magnetization
shift
Substrates
thin films

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Thickness-dependent appearance of ferromagnetism in Pd(100) ultrathin films. / Sakuragi, S.; Sakai, T.; Urata, S.; Aihara, S.; Shinto, A.; Kageshima, H.; Sawada, M.; Namatame, H.; Taniguchi, M.; Sato, Tetsuya.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 5, 054411, 18.08.2014.

Research output: Contribution to journalArticle

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, vol. 90, no. 5, 054411. https://doi.org/10.1103/PhysRevB.90.054411
Sakuragi, S. ; Sakai, T. ; Urata, S. ; Aihara, S. ; Shinto, A. ; Kageshima, H. ; Sawada, M. ; Namatame, H. ; Taniguchi, M. ; Sato, Tetsuya. / Thickness-dependent appearance of ferromagnetism in Pd(100) ultrathin films. In: Physical Review B - Condensed Matter and Materials Physics. 2014 ; Vol. 90, No. 5.
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