Two-photon photoemission magnetic circular dichroism and its energy dependence

Takeshi Nakagawa, Isamu Yamamoto, Yasumasa Takagi, Kazuya Watanabe, Yoshiyasu Matsumoto, Toshihiko Yokoyama

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

We report an observation of two-photon photoemission (2PPE) magnetic circular dichroism (MCD) near the Fermi level. The 2PPE MCD asymmetry from a perpendicularly magnetized Ni film on Cu(001) at the normal-incidence geometry gives a significant intensity (∼6%) comparable to that of the one-photon photoemission. The energy dependence of the 2PPE MCD asymmetry is essentially similar to that of the 1PPE MCD, which indicates that the initial and final states involved, not the intermediate state, play a dominant role for the MCD asymmetries. For the 2PPE MCD measurements the asymmetry shows a maximum of as much as ∼28% at the light incident angle of ∼45°.

本文言語英語
論文番号172404
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
79
17
DOI
出版ステータス出版済み - 5 1 2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • 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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