Direct observation of electronic structure at the hetero-interface of trongly-correlated oxides studied by hard x-ray photoemission spectroscopy

• Project/Area Number: 19740199
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: HORIBA Koji The University of Tokyo, 大学院・工学系研究科, 助教 (10415292)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,710,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥510,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2007: ¥1,500,000 (Direct Cost: ¥1,500,000)
• Keywords: 強相関系 / 界面

Research Abstract

In order to clarify the origin of unusual physical properties at hetero-interfaces of strongly-correlated oxides, we have performed the direct observation of electronic structure at the oxide hetero-interfaces using hard x-ray photoemission spectroscopy. We have succeeded in obtaining the depth-dependence of the electronic structure using hard x-ray photoemission spectroscopy, and clarified the electronic structures of several strongly-correlated oxide thin films and hetero-structures.

Research Products

• [Journal Article] F abrication and Characterization of AlN/InN Heterostructures (2009)
  • Author(s): Tomoaki Fujii、Kazuma Shimomoto、Re iko Ohba、Yasushi Toyoshima、Koji H oriba、Jitsuo Ohta、Hiroshi Fujioka、Masaharu Oshima、Shigenori Ueda、Hi deki Yoshikawa、Keisuke Kobayashi
  • Journal Title: Applied P hysics Express 2巻
  • Peer Reviewed
• [Journal Article] Thickness dependent el ectronic structure of La0. 6Sr0. 4MnO3 layer in SrTiO3 / La0. 6Sr0. 4MnO3 / SrT iO3 heterostructures studied by har d x-ray photoemission spectroscopy (2009)
  • Author(s): Kohei Yoshimatsu、Koji Horiba、Hiro shi Kumigashira、Eiji Ikenaga、Masa haru Oshima
  • Journal Title: Applied Physics Letters 94巻
  • Peer Reviewed
• [Journal Article] Pressure-induced change in the electronic structure of eptaxially strained La1 ? xSrxMnO3 thin films (2009)
  • Author(s): Koji Horiba、Atsushi Maniwa、Akira Chikamatsu、Kohei Yoshimatsu、Hiroshi Kumigashira、Hiroki Wadati、Atsushi Fujimori、Shigenori Ueda、Hideki Yoshikawa、Eiji Ikenaga、J.J. Kim、Keisuke Kobayashi、Masaharu Oshima
  • Journal Title: Physical Review B 80巻
  • Peer Reviewed
• [Journal Article] Spectroscopic Evidence for Competing Reconstructionsin Polar Multilayers LaAlO3/LaVO3/LaAlO3 (2009)
  • Author(s): Masaru Takizawa、Yasushi Hotta、Tomofumi Susaki、Yukiaki Ishida、Hiroki Wadati、Yasutaka Takata、Koji Horiba、Masaharu Matsunami、Shik Shin、Makina Yabashi、Kenji Tamasaku、Yoshinori Nishino、Tetsuya Ishikawa、Atsushi Fujimori、Harold Y. Hwang
  • Journal Title: Physical Review Letters 102巻
  • Peer Reviewed
• [Journal Article] Pressure-induced change in the electronic structure of epitaxially strained La_<1-x>Sr_xMnO_3 thin films (2009)
  • Author(s): Koji Horiba
  • Journal Title: Physical Review B 80
  • Peer Reviewed
• [Journal Article] Spectroscopic Evidence for Competing Reconstructionsin Polar Multilayers LaAlO_3/LaVO_3/LaAlO_3 (2009)
  • Author(s): Masaru Takizawa
  • Journal Title: Physical Review Letters 102
  • Peer Reviewed
• [Journal Article] Thickness dependent electronic structure of La_<0.6>Sr_<0.4>MnO_3 layer in SrTiO_3/ La_<0.6>Sr_<0.4>MnO_3 / SrTiO_3 heterostructures studied by hard x-ray photoemission (2009)
  • Author(s): Kohei Yoshimatsu
  • Journal Title: Applied Physics Letters 94
  • Peer Reviewed
• [Journal Article] Fabrication and Characterization of A1N/InN Heterostructures (2009)
  • Author(s): Tomoaki Fujii
  • Journal Title: Applied Physics Express 2
  • Peer Reviewed
• [Journal Article] 軟X線、硬X線光電子分光による強相関化合物の電子状態の研究 (2008)
  • Author(s): 堀場弘司
  • Journal Title: 放射光 21巻 Pages: 121-124
  • NAID: 10020476109
  • Peer Reviewed
• [Journal Article] Analysi s of ITO/Mg:GaN interfaces by synch rotron radiation hard X-ray photoem ission spectroscopy and their elect rical characteristics (2008)
  • Author(s): Yasushi Toyoshima、Koji Horiba、Mas aharu Oshima、Jitsuo Ohta、Hiroshi Fujioka、Hisayuki Miki、Shigenori U eda、Yoshiyuki Yamashita、Hideki Yo shikawa、Keisuke Kobayashi
  • Journal Title: Applied Surf aceScience 255巻 Pages: 2149-2152
  • Peer Reviewed
• [Journal Article] Analysis of ITO/Mg : GaN interfaces by synchrotron radiation hard X-ray photoemission spectroscopy and their electrical characteristics (2008)
  • Author(s): Yasushi Toyoshima
  • Journal Title: Applied Surface Science 255 Pages: 2149-2152
  • Peer Reviewed
• [Journal Article] 軟X線・硬X線光電子分光による強相関化合物の電子状態の研究 (2008)
  • Author(s): 堀場弘司
  • Journal Title: 放射光 21 Pages: 121-124
  • NAID: 10020476109
  • Peer Reviewed
• [Journal Article] Electronic struct ure of LaNiO3-x: An in situ soft x-r ay photoemission and absorption stu dy (2007)
  • Author(s): Koji Horiba、Ritsuko Eguchi、Muneta ka Taguchi、Ashish Chainani、Akiko Kikkawa、Yasunori Senba、Haruhiko O hashi、Shik Shin
  • Journal Title: Physical Review B 76
  • Peer Reviewed
• [Journal Article] 固体内部の電子状態を探る硬X線光電子分光 (2007)
  • Author(s): 堀場弘司
  • Journal Title: 表面科学 28巻 Pages: 698-703
  • Peer Reviewed
• [Journal Article] Electronic structure of LaNiO_<3-x>: An in situ soft x-ray photoemission and absorption study (2007)
  • Author(s): Koji Horiba
  • Journal Title: Physical Review B 76
  • Peer Reviewed
• [Journal Article] 固体内部の電子状態を探る硬X線励起光電子分光 (2007)
  • Author(s): 堀場弘司
  • Journal Title: 表面科学 28 Pages: 698-703
  • NAID: 10020008310
  • Peer Reviewed
• [Presentation] Pressure-Induced Change in Electronic Structure of Eptaxially Strained La1?xSrxMnO3 Thin Films (2009)
  • Author(s): Koji Horiba、Atsushi Maniwa、Akira Chikamatsu、Kohei Yoshimatsu、Hiroshi Kumigashira、Hiroki Wadati、Atsushi Fujimori、Shigenori Ueda、Hideki Yoshikawa、Eiji Ikenaga、J.J. Kim、Keisuke Kobayashi、Masaharu Oshima
  • Organizer: The AIST-RIKEN Joint Workshop on " Emergent Phenomena of Correlated Materials"
  • Place of Presentation: Okinawa, Japan
  • Year and Date: 2009-03-05
• [Presentation] Pressure-Induced Change in Electronic Structure of Eptaxially Strained La_<1-x> Sr_x MnO_3 Thin Films (2009)
  • Author(s): Koji Horiba
  • Organizer: The AIST-RIKEN Joint Workshop on "Emergent Phenomena of Correlated Materials"
  • Place of Presentation: Okinawa, Japan
  • Year and Date: 2009-03-05
• [Presentation] 軟X線、硬X線光電子分光による強相関化合物の電子状態の研究 (2008)
  • Author(s): 堀場弘司
  • Organizer: 21回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 立命館大学
  • Year and Date: 2008-01-12
• [Presentation] 軟X線・硬X線光電子分光による強相関化合物の電子状態の研究 (2008)
  • Author(s): 堀場弘司
  • Organizer: 第21回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 立命館大学
  • Year and Date: 2008-01-12
• [Presentation] Hard X-Ray Photoemission Study of Epitaxial-Strain-Controlled La1 ? xSrxMnO3 Thin Films (2007)
  • Author(s): Koji Horiba、Atsushi Maniwa、Akira Chikamatsu、Hiroshi Kumigashira、Masaharu Oshima、Daisuke Nomoto、Shigenori Ueda、Hideki Yoshikawa、Eiji Ikenaga、J.J. Kim、Keisuke Kobayashi
  • Organizer: The 15th International Conference on Vacuum Ultraviolet Radiation Physics
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2007-08-02
• [Presentation] Hard X-Ray Photoemission Study of Epitaxial-Strain-Controlled La_<1_x>Sr_xMnO_3 Thin Films (2007)
  • Author(s): Koji Horiba
  • Organizer: The 15th International Conference on Vacuum Ultraviolet Radiation Physics
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2007-08-02