Electronic and magnetic states of half-metallic alloys studied by photoemission

• Project/Area Number: 20760441
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Physical properties of metals
• Research Institution: Nagoya University
• Principal Investigator: TSUNEKAWA Masanori Nagoya University, 教育学部, 講師 (20403131)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 電子 / 磁気物性 / 金属物性 / 磁性 / スピンエレクトロニクス

Research Abstract

Electronic states in Cobalt-based Heusler alloys (X2YZ) were studied by soft and hard X-ray photoelectron spectroscopy. These spectra show a clear change in electronic states near the Fermi level with increasing 3d electron concentration by substitution of Y site in the Heusler alloys. These experimental results are consistent with the theoretically obtained electronic structures.

Research Products

• [Journal Article] Bulk electronic structures and strong electron-phonon interactions in an electron-doped high-temperature superconductor (2009)
  • Author(s): M. Tsunekawa, et.al.
  • Journal Title: New Journal of Physics 10
  • Peer Reviewed
• [Journal Article] (2008)
  • Author(s): M. Tsunekawa, A. Sekiyama, S. Kasai, H. Fujiwara, S. Imada, T. Muro, Y. Onose, Y. Tokura, S. Suga
  • Journal Title: New Journal of Physics Vol.10
  • Peer Reviewed
• [Journal Article] (2008)
  • Author(s): E.E. Kokorina, E.Z. Kuchinskii, I.A. Nekrasov, Z.V. Pchelkina, M.V. Sadovskii, A. Sekiyama, S. Suga, M. Tsunekawa
  • Journal Title: Journal of Experimental and Theoretical Physics Vol.107 Pages: 828-838
  • Peer Reviewed
• [Journal Article] Origin of "Hot Spots'in the Pscudogap Regime of Nd_1.85Ce_0.15CuO_4 : An LDA + DMFT + 〓k Study (2008)
  • Author(s): E. E. Kokorina, E. Z. Kuchinskii. I. A. Nekrasov, Z. V. Pchelkina, M. V. Sadovskii, A. Sekiyama. S. Situ, and M. Tsunekawa
  • Journal Title: Journal of Experimental and Theoretical Physics 107 Pages: 828-838
  • Peer Reviewed
• [Presentation] Bulk electronic structures and strong electron-phonon interactions in an electron-doped high-temperature superconductor (2009)
  • Author(s): M. Tsunekawa, A. Sekiyama, S. Kasai, H. Fujiwara, S. Imada, T. Muro, Y. Onose, Y. Tokura, S. Suga
  • Organizer: 11-th International Conference on Electronic Spectroscopy and Structure (ICESS-11)
  • Place of Presentation: Nara, Japan.
  • Year and Date: 2009-10-06
• [Presentation] Bulk electronic structures and strong electron-phonon interactions in an electron-doped high-temperature superconductor (2009)
  • Author(s): M.Tsunekawa, A.Sekiyama, S.Kasai, H.Fujiwara, S.Imada, T.Muro, Y.Onose, Y.Tokura, S.Suga
  • Organizer: 11-th International Conference on Electronic and Spectroscopy and Structure (ICESS-11)
  • Place of Presentation: Nara, Japan.
  • Year and Date: 2009-10-06
• [Presentation] 電子ドープ型銅酸化物超伝導体Nd2 - xCexCuO4 (x = 0. 075, 0. 15)のバルク電子状態と強い電子格子相互作用 (2009)
  • Author(s): 恒川雅典、関山明、笠井修一、今田真、藤原秀紀、室隆桂之、小野瀬佳文、十倉好紀、菅滋正
  • Organizer: 日本物理学会2008年度秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2009-09-20
• [Presentation] Electronic Structures of Octathio[8]circulene Thin Films Probed by Photoelectron Spectroscopy and Inverse Photoemission Spectroscopy (2009)
  • Author(s): M. Tsunekawa, Hiroyuki Yamane, K. Akaike, K. Kato, K. Kanai, Y. Ouchi, K. Seki, T. Seki, K. Awaga
  • Organizer: Winter School in Nagoya 2009:JSPS Core to Core Program
  • Place of Presentation: Nagoya, Japan.
• [Presentation] Electronic Structures of Octathio [8] circulene Thin Films Probed by Photoelectron Spectroscopy and Inverse Photoemisslon Spectroscopy (2009)
  • Author(s): M. Tsunekawa, et.al.
  • Organizer: Winter School in Naeova 2009 : JSPS Core to Core Program
  • Place of Presentation: 名古屋大学
• [Presentation] サルフラワー薄膜の光電子分光 (2008)
  • Author(s): 恒川雅典、山根宏之、赤池幸紀、加藤啓太、金井要、関一彦、藤本卓也、阿波賀邦夫
  • Organizer: 日本物理学会, 2008年度秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-22
• [Presentation] サルフラワー薄膜の光電子分光 (2008)
  • Author(s): 恒川雅典, 他
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学
• [Presentation] 電子ドープ型銅酸化物超伝導体Nd_2-xCe_xCuO_4(x=0.075, 0.15)のバルク電子状態と強い電子格子相互作 (2008)
  • Author(s): 恒川雅典, 他
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学