Toroidal moment observed by resonant x-ray diffraction

• Project/Area Number: 22740243
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: YAMASAKI Yuichi 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 助教 (70571610)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 共鳴X線散乱 / マルチフェロイクス / 強誘電性

Research Abstract

We have investigated the spatial order of dipole moment without inversion symmetry, such as an electric polarization and a toroidal moment, by the resonant x-ray scattering at K pre-edge absorption which is sensitive to symmetry breaking.

Research Products

• [Journal Article] Nature of the coexisting phase in YMnO3 thin films revealed by soft and hard x-ray diffraction studies (2012)
  • Author(s): H. Wadati, J. Okamoto, M. Garganourakis, V. Scagnoli, U. Staub, Y. Yamasaki, H. Nakao, Y. Murakami, M. Nakamura, M. Kawasaki, and Y. Tokura
  • Journal Title: Physical Review Letters Volume: 108 Pages: 47203-47203
• [Journal Article] Origin of the Large Polarization in Multiferroic YMnO_3 Thin Films Revealed by Soft- and Hard-X-Ray Diffraction (2012)
  • Author(s): H.Wadati
  • Journal Title: Phys.Rev.Lett. Volume: 108 Issue: 4 Pages: 47203-47203
  • DOI: 10.1103/physrevlett.108.047203
  • Peer Reviewed
• [Journal Article] An x-ray induced insulator-metal transition in an oxide thin film (2011)
  • Author(s): K. Shibuya, D. Okuyama, R. Kumai, Y. Yamasaki, H. Nakao, Y. Murakami, Y. Taguchi, T. Arima, M. Kawasaki, and Y. Tokura
  • Journal Title: Physical Review B Volume: 84 Pages: 165108-165108
• [Journal Article] The randomness effect of spin-orbital order in Eu1.x(La0.2542Y0.7458) xVO3 (2011)
  • Author(s): R. Fukuta, K. Henmi, S. Miyasaka, S. Tajima, D. Kawana, K. Ikeuchi, Y. Yamasaki, A. Nakao, H. Nakao, Y. Murakami, and K. Iwasa
  • Journal Title: Physical Review B Volume: 84 Pages: 140409-140409
• [Journal Article] X-ray induced insulator-metal transition in a thin film of electron-doped VO2 (2011)
  • Author(s): K.Shibuya
  • Journal Title: Phys.Rev Volume: B 84, (No.16) Issue: 16 Pages: 165108-165108
  • DOI: 10.1103/physrevb.84.165108
  • Peer Reviewed
• [Journal Article] Effect of cation size variance on spin and orbital order in Eul_<1-x>(La_<0.254>Y_<0.746>)_xVO_3 (2011)
  • Author(s): R.Fukuta, S.Miyasaka, et al
  • Journal Title: Phys.Rev.B Volume: 84 Issue: 14 Pages: 140409-140409
  • DOI: 10.1103/physrevb.84.140409
  • Peer Reviewed
• [Journal Article] Observation of Spin Helicity Using Non-resonant Circularly Polarized X-ray Diffraction (2010)
  • Author(s): H. Sagayama, N. Abe, K. Taniguchi, T. Arima, Y. Yamasaki, D. Okuyama, Y. Tokura, S. Sakai, T. Morita, T. Komesu, H. Ohsumi, M. Takata
  • Journal Title: Journal of the Physical Society of Japan Volume: 79 Pages: 43711-43711
• [Journal Article] Excess-electron induced polarization and magnetoelectric effect in yttrium iron garnet (2010)
  • Author(s): Y. Kohara, Y. Yamasaki, Y. Onose, and Y. Tokura
  • Journal Title: Physical Review B Volume: 82 Pages: 104419-104419
• [Journal Article] Critical competition between two distinct orbital-spin ordered states in perovskite vanadates (2010)
  • Author(s): J. Fujioka, T. Yasue, S. Miyasaka, Y. Yamasaki, T. Arima, H. Sagayama, T. Inami, K. Ishii, and Y. Tokura
  • Journal Title: Physical Review B Volume: 82 Pages: 144425-144425
• [Journal Article] Observation of Spin Helicity Using Non-resonant Circularly Polarized X-ray Diffraction (2010)
  • Author(s): H.Sagayama, N.Abe, K.Taniguchi, T.Arima, Y.Yamasaki, D.Okuyama, Y.Tokura, S.Sakai, T.Morita, T.Komesu, H.Ohsumi, M.Takata
  • Journal Title: Journal of the Physical Society of Japan Volume: 79 Pages: 43711-43711
  • Peer Reviewed
• [Journal Article] Excess-electron induced polarization and magnetoelectric effect in yttrium iron garnet (2010)
  • Author(s): Y.Kohara, Y.Yamasaki, Y.Onose, Y.Tokura
  • Journal Title: Physical Review B Volume: 82 Pages: 104419-104419
  • Peer Reviewed
• [Journal Article] Critical competition between two distinct orbital-spin ordered states in perovskite vanadates (2010)
  • Author(s): J.Fujioka, T.Yasue, S.Miyasaka, Y.Yamasaki, T.Arima, H.Sagayama, T.Inami, K.Ishii, Y.Tokura
  • Journal Title: Physical Review B Volume: 82 Pages: 144425-144425
  • Peer Reviewed
• [Presentation] Resonant X-ray Diffraction from CB-type Charge-Orbital Order in Nd1.5Sr0.5NiO4 (2011)
  • Author(s): Yuichi Yamasaki, Masaki Uchida, Hironori Nakao, Youichi Murakami, Yoshinori Tokura
  • Organizer: IUCr2011
  • Place of Presentation: Madrid, Spain
  • Year and Date: 2011-08-20
• [Presentation] 層状ニッケル酸化物Nd2-xSrxNiO4におけるホール軌道と電荷秩序の観測 (2011)
  • Author(s): 山崎裕一、打田正輝、中尾裕則、村上洋一、金子良夫、十倉好紀
  • Organizer: 日本物理学会2011年春季大会
• [Presentation] 共鳴X線ATS散乱法による反強的に秩序したトロイダルモーメントの検出 (2011)
  • Organizer: 第28回PFシンポジウム
• [Presentation] Resonant X-ray Diffraction from CB-type Charge-Orbital Order in Nd1.5Sr0.5NiO4 (2011)
  • Author(s): Yuichi Yamasaki, Masaki Uchida, Hironori Nakao, Youichi Murakami, and Yoshinori Tokura
  • Organizer: IUCr2010
  • Place of Presentation: Madrid, Spain
• [Presentation] ヘマタイトFe2O3における共鳴X線ATS散乱法を用いたトロイダルモーメントの検出 (2010)
  • Author(s): 山崎裕一、中尾裕則、村上洋一
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 大阪府立大
• [Remarks]
  • URL: http://researchmap.jp/yuichi_yamasaki
• [Remarks]
  • URL: http://researchmap.jp/yuichi.yamasaki
• [Remarks]
  • URL: http://researchmap.jp/yuichi_yamasaki