Spin and Alignment effect in Oxygen Chemisorption on Ni(111): A State-selected O<sub>2</sub> Beam Study

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  • Ni(111)表面へのO<sub>2</sub>吸着スピン・立体効果： 量子状態選別酸素分子ビームによる解析
  • Ni(111)表面へのO₂吸着スピン・立体効果 : 量子状態選別酸素分子ビームによる解析
  • Ni(111)ヒョウメン エ ノ O ₂ キュウチャク スピン ・ リッタイ コウカ : リョウシ ジョウタイ センベツ サンソ ブンシ ビーム ニ ヨル カイセキ

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A single spin-rotational state-selected [(J, M)＝(2, 2)] O2 beam allows us to investigate how the molecular alignment and electron spin affect oxygen chemisorption. Recent experiments of O2 chemisorption on magnetized Ni(111) have indicated that O2 sticking probability is higher when its spin is oriented anti-parallel to the majority spin direction of the Ni substrate. The spin dependence becomes more significant at lower translational energy, and amounts to over 40% at thermal energy. This clear spin effect suggests that incident O2 molecules keep high spin polarizations even at the position of the dissociation barrier. In this article, the observed spin effect is reviewed after introducing the spinrotational state of O2 (3Σg-).

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 36 (12), 608-613, 2015

    The Surface Science Society of Japan

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