Study of anomalous electronic phenomena in phase boundary/coexistence phase using commercially available laser ultrahigh resolution photoemission spectroscopy

• Project/Area Number: 23684027
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Osaka University
• Principal Investigator: KISU Takayuki 大阪大学, 大学院・基礎工学研究科, 准教授 (20391930)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥30,160,000 (Direct Cost: ¥23,200,000、Indirect Cost: ¥6,960,000); Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2011: ¥28,210,000 (Direct Cost: ¥21,700,000、Indirect Cost: ¥6,510,000)
• Keywords: 強相関系 / レーザー光電子分光 / 強相関電子系 / 物性実験 / 超伝導材料・素子 / 有機導体 / 角度分解光電子分光 / 分光法開発 / 特殊技術一般化 / レーザー / 銅酸化物高温超伝導体 / 有機超伝導体 / フェルミオロジー

Research Abstract

I have constructed commercially available laser photoemission system and achieved 370 ueV of energy resolution that enables us to measure superconducting gap of niobium and V3Si. It is first time to realize the energy resolution better than 1meV using commercially available laser. 180 ueV of energy resolution is easily realized using this system. Additionally, I have succeeded to observe the superconducting gap of k-(BEDT -TTF)_2Cu(NCS)_2 for the first time in the world.

Research Products

• [Presentation] 汎用レーザーを用いた超高分解能光電子分光装置の建設 (2013)
  • Author(s): 池田真司、山口貴司、畠山千佳、池内久晃、藤原秀紀、木須孝幸、関山明
  • Organizer: 第26回日本放射光学会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2013-01-14
• [Presentation] Commercially available ultrahigh resolution Laser ARPES apparatus (2013)
  • Author(s): T. Kiss, H. Fujiwara, S. Ikeda, T. Yamaguchi, Y. Nakatani, H. Ikeuchi, A. Sekiyama
  • Organizer: Strongly Correlated Electron Systems 2013
  • Place of Presentation: 東京大学
• [Remarks]
  • URL: http://decima.mp.es.osaka-u.ac.jp/index.html
• [Remarks] 関山研究室
  • URL: http://decima.mp.es.osaka-u.ac.jp/peslab/japanese/index.html