Controlling the valence fluctuations in epitaxial thin films of heavy fermion systems and directly observing their electronic structure

• Project/Area Number: 26707019
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Toyota Technological Institute (2015-2016); Institute for Molecular Science (2014)
• Principal Investigator: MATSUNAMI MASAHARU 豊田工業大学, 工学(系)研究科(研究院), 准教授 (30415301)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥24,570,000 (Direct Cost: ¥18,900,000、Indirect Cost: ¥5,670,000); Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2014: ¥20,670,000 (Direct Cost: ¥15,900,000、Indirect Cost: ¥4,770,000)
• Keywords: 光電子分光 / 重い電子系 / 価数揺動 / エピタキシャル薄膜 / 物性実験 / 価数搖動

Outline of Final Research Achievements

In this study, we have performed developed the state-of-the-art apparatuses of angle-resolved photoemission spectroscopy (ARPES) combined with molecular-beam epitaxy (MBE) for the investigation of electronic structure in the heavy-fermion compounds, thin films and superlattices. In particular, we have focused on the valence fluctuation feature in the heavy-fermion systems, leading to a wide variety of strongly correlated electron phenomena.

Research Products

• [Presentation] 2種類の蔡型クラスターにおける電子状態の違い: Yb系近似結晶の光電子分光 (2016)
  • Author(s): 松波雅治，大浦正樹，出田真一郎，田中清尚，玉作賢治，石川哲也，竹内恒博，山田庸公，蔡安邦，出口和彦，佐藤憲昭，石政勉
  • Organizer: 日本物理学会・2016年秋季大会
  • Place of Presentation: 金沢大学 角間キャンパス（石川県金沢市）
  • Year and Date: 2016-09-14
• [Presentation] Yb化合物の熱電材料探索 (2016)
  • Author(s): 飯塚拓也，堀太郎，山本晃生，松波雅治，竹内恒博
  • Organizer: 第13回日本熱電学会学術講演会
  • Place of Presentation: 東京理科大学 葛飾キャンパス（東京都葛飾区）
  • Year and Date: 2016-09-06