Switching of magnetism via modifying phase shift of quantum-well states by tailoring the interface electronic structure

Shunsuke Sakuragi, Hiroyuki Kageshima, Tetsuya Sato

研究成果: Article査読

3 被引用数 (Scopus)

抄録

We demonstrate control of the magnetism of Pd(100) ultrathin films, which show d-electron quantum-well-induced ferromagnetism, via modulation of the interface electronic state using density functional calculation. From an analysis based on the phase model, forming the Au/Pd(100) interface induces hybridization of the wave function of d-electron quantum-well states, and modulates the term of the scattering phase shift as a function of the reciprocal lattice point. In contrast, forming the Al interface, which has only s electrons at the Fermi energy, cannot modify the scattering phase shift. Our finding indicates the possibility of modifying the phase shift by tailoring the interface electronic states using hybridization of the wave function, and this efficiently changes the density of states near the Fermi energy of Pd films, and the switching between paramagnetism and ferromagnetism occurs based on the condition for ferromagnetism (Stoner criterion).

本文言語English
論文番号014410
ジャーナルPhysical Review B
101
1
DOI
出版ステータスPublished - 2020 1月 9

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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