Staff: H. Nakao (PHS 4868)

Overview

BL-3A

• Light source
• Type : Short Gap Undulator
• Optics
• Si (111) monochromator
• Rh coated Si toroidal mirror (1:1 focusing)
• X-rays at Sample
• Energy range : 5~14 keV
• Energy resolution : 3 x 10-4
• Photon flux : 10+12 ~ 10+13 photons/s
• Beam size : 0.6 mm (H) x 0.4 mm (V)
• Huber5020 4(6)-circle diffractometer
• Huber 2-circle diffractometer
  + He-flow cryostat with superconducting magnet (2K - , 0-7.5T)
    [Sample holder1, Sample holder2]

BL-4C

• Light source
• Type : Bending magnet
• Max. beam fan: Hor.= 2 mrad, Ver. = 0.2 mrad
• Optics
• Si (111) monochromator
• Rh coated Si toroidal mirror (1:1 focusing)
• X-rays at Sample
• Energy range : 5~18 keV
• Energy resolution : 3 x 10-4
• Photon flux : 10+11 ~ 10+12 photons/s
• Beam size : 0.8 mm (H) x 0.6 mm (V)
• Huber5020 4(6)-circle diffractometer

Equipments for BL-3A and BL-4C

• Silicon drift detector
• Multi-channel analyzer for detectors
• Oscilloscope
• Polarizer [Si(111), Ge(111), Cu(220), PG(002)]
• Closed-cycle cryostat of He gas (Info.)
• Closed-cycle cryostat of He gas for high-pressure experiment with diamond anvil cell

Beamline memo

• BL manual
• General SPEC reference manual
• BL-3A memo
• BL-4C memo

Scientific activity

• Usual x-ray diffraction experiments
• Magnetic control of ferroelectric polarization,
  T. Kimura, T. Goto, H. Shintani, K. Ishizaka, T. Arima, and Y. Tokura, Nature 426 (2003) 55-58.

• Commensurate-Incommensurate Crossover of Charge Stripe in La_2-xSr_xNiO₄(x=1/3)
K.Ishizuka, T.Arima, Y.Murakami, R.Kajimoto, H.Yoshizawa, N.Nagaosa and Y.Tokura, Phys. Rev. Lett. 92 (2004) 196404:1-4.
• Multiple charge density wave transitions in the antiferromagnets RNiC₂ (R = Gd, Tb),
  S. Shimomura, C. Hayashi, N. Hanasaki, K. Ohnuma, Y. Kobayashi, H. Nakao, M. Mizumaki, and H. Onodera, Phys. Rev. B 93 (2016) 165108:1-11.

• Orbital and charge ordering studied by resonant x-ray scattering technique
• Direct Observation of Charge and Orbital Ordering in La_0.5Sr_1.5MnO₄
  Y. Murakami, H. Kawada, H. Kawata, M. Tanaka, T. Arima, Y. Moritomo, and Y. Tokura, Phys. Rev. Lett. 80 (1998) 1932-1935.

• Quantitative Determination of the Atomic Scattering Tensor in Orbitally Ordered YTiO₃ by using Resonant X-ray Scattering Technique
  H. Nakao, Y. Wakabayashi, T. Kiyama, Y. Murakami, M. v. Zimmermann, J. P. Hill, Doon Gibbs, S. Ishihara, Y. Taguchi, and Y. Tokura, Phys. Rev. B 66 (2002) 184419:1-7.

• Crystal Structure and Charge-Ordering in La_1.5Ca_0.5CoO₄ Studied by Neutron and Resonant X-ray Scattering
  K. Horigane, H. Nakao, Y. Kousaka, T. Murata, Y. Noda, Y. Murakami, and J. Akimitsu, J. Phys. Soc. Jpn. 77 (2008) 044601:1-6.

• Orbital Ordering of Intermediate-Spin State of Co³⁺ in Sr₃YCo₄O_10.5
  H. Nakao, T. Murata, D. Bizen, Y. Murakami, K. Ohoyama, K. Yamada, S. Ishiwata, W. Kobayashi, and I. Terasaki, J. Phys. Soc. Jpn. 80 (2011) 023711:1-4.

• Resonant magnetic x-ray scattering
• Determination of long-range all-in-all-out ordering of Ir⁴⁺ moments in a pyrochlore iridate Eu₂Ir₂O₇ by resonant x-ray diffraction,
  H. Sagayama, D. Uematsu, T. Arima, K. Sugimoto, J. J. Ishikawa, E. O'Farrell, and S. Nakatsuji, Phys. Rev. B 87 (2013) 100403(R):1-4.

• Quantum Hall effect in a bulk antiferromagnet EuMnBi₂ with magnetically confined two-dimensional Dirac fermions,
  H. Masuda, H. Sakai, M. Tokunaga, Y. Yamasaki, A. Miyake, J. Shiogai, S. Nakamura, S. Awaji, A. Tsukazaki, H. Nakao, Y. Murakami, T. Arima, Y. Tokura, S. Ishiwata, Science Advances 2 (2016) e1501117:1-6.

• Observation of magnetic order in multiferroic SmMn₂O₅ studied by resonant x-ray magnetic scattering,
  Y. Ishii, S. Horio, M. Mitarashi, T. Sakakura, M. Fukunaga, Y. Noda, T. Honda, H. Nakao, Y. Murakami, and H. Kimura, Phys. Rev. B 93 (2016) 064415:1-7.

• Surface & Interface
• Sub-A Resolution Electron Density Analysis of the Surface of Organic Rubrene Crystals,
  Y. Wakabayashi, J. Takeya and T. Kimura, Phys. Rev. Lett. 104 (2010) 066103.

• Crystal Structure and Valence Distribution of [(LaMnO₃)_m(SrMnO₃)_m]_n Artificial Superlattices
  H. Nakao, J. Nishimura, Y. Murakami, A. Ohtomo, T. Fukumura, M. Kawasaki, T. Koida, Y. Wakabayashi, and Hiroshi Sawa, J. Phys. Soc. Jpn. 78 (2009) 024602:1-10.

• Surface Ordering of Orbitals at Higher Temperature in LaCoO₃ Thin Film,
  Y. Yamasaki, J. Fujioka, H. Nakao, J. Okamoto, T. Sudayama, Y. Murakami, M. Nakamura, M. Kawasaki, T. Arima, and Y. Tokura, J. Phys. Soc. Jpn. 85 (2016) 023704:1-4.

• Magnetic field experiments
• Orbital Ordering and Magnetic Field Effect in MnV₂O₄,
  T. Suzuki, M. Katsumura, K. Taniguchi, T. Arima and T. Katsufuji, Phys. Rev. Lett. 98 (2007) 127203.

• Magnetic Field Switching between the Two Orbital-Ordered States in DyVO₃,
  S. Miyasaka, T. Yasue, J. Fujioka, Y. Yamasaki, Y. Okimoto, R. Kumai, T. Arima and Y. Tokura, Phys. Rev. Lett. 99 (2007) 217201.

• Magnetic-Field-Induced 4f-Octupole in CeB₆ Probed by Resonant X-Ray Diffraction,
  T. Matsumura, T. Yonemura, K. Kunimori, M. Sera and F. Iga, Phys. Rev. Lett. 103 (2009) 017203.

• Interplay between charge density wave and antiferromagnetic order in GdNiC₂,
  N. Hanasaki, S. Shimomura, K. Mikami, Y. Nogami, H. Nakao, and H. Onodera, Phys. Rev. B 95 (2017) 085103:1-5.

• Magnetic Field Induced Triple-q Magnetic Order in Trillium Lattice Antiferromagnet EuPtSi Studied by Resonant X-ray Scattering,
  C. Tabata, T. Matsumura, H. Nakao, S. Michimura, M. Kakihana, T. Inami, K. Kaneko, M. Hedo, T. Nakama, and Y. Onuki, J. Phys. Soc. Jpn. 88 (2019) 093704:1-5.
• Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet,
  T. Kurumaji, T. Nakajima, M. Hirschberger, A. Kikkawa, Y. Yamasaki, H. Sagayama, H. Nakao, Y. Taguchi, T. Arima, Y. Tokura, Science 356 (2019) 914-918.
• Skyrmion phase and competing magnetic orders on a breathing kagome lattice,
  M. Hirschberger, T. Nakajima, S. Gao, L. Peng, A. Kikkawa, T. Kurumaji, M. Kriener, Y. Yamasaki, H. Sagayama, H. Nakao, K. Ohishi, K. Kakurai, Y. Taguchi, X. Yu, T. Arima, Y. Tokura, Nat. Commun. 10 (2019) 5831:1-9.
• Nanometric square skyrmion lattice in a centrosymmetric tetragonal magnet,
  N. D. Khanh, T. Nakajima, X. Z. Yu, S. Gao, K. Shibata, M. Hirschberger, Y. Yamasaki, H. Sagayama, H. Nakao, L. C. Peng, K. Nakajima, R. Takagi, T. Arima, Y. Tokura, S. Seki, Nat. Nanotechnol. 15 (2020) 444-450.

• X-ray induced phase transition
• X-ray induced insulator-metal transition in a thin film of electron-doped VO₂,
  K. Shibuya, D. Okuyama, R. Kumai, Y. Yamasaki, H. Nakao, Y. Murakami, Y. Taguchi, T. Arima, M. Kawasaki, and Y. Tokura, Phys. Rev. B 84 (2011) 165108:1-6.

• X-ray photoinduced persistent and bidirectional phase transition enabled by impurity doping in layered manganite,
  Y. Yamaki, Y. Yamasaki, H. Nakao, Y. Murakami, Y. Kaneko and Y. Tokura, Phys. Rev. B 87 (2013) 081107:1-5.

• X-ray induced lock-in transition of cycloidal magnetic order in a multiferroic perovskite manganite,
  Y. Yamasaki, H. Nakao, Y. Murakami, T. Nakajima, A. S. Lafuente, H. Ohsumi, M. Takata, T. Arima and Y. Tokura, Phys. Rev. B 91 (2015) 100403:1-5.

• High pressure experiments using diamond anvil cell
• Orbital ordering in RVO₃ (R = Y, Tb) controlled by hydrostatic pressure,
  D. Bizen, K. Nakatsuka, T. Murata, H. Nakao, Y. Murakami, S. Miyasaka, Y. Tokura, Phys. Rev. B 78 (2008) 224104:1-6.

• "Devil's Staircase"-type Phase Transition in NaV₂O₅ under High Pressure
  K. Ohwada, Y. Fujii, N. Takesue, M. Isobe, Y. Ueda, H. Nakao, Y. Wakabayashi, Y. Murakami, K. Ito, Y. Amemiya, H. Fujihisa, K. Aoki, T. Shobu, Y. Noda, and N. Ikeda, Phys. Rev. Lett. 87 (2001) 086402:1-4.

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PF Highlights

2022

• Active Sites for Oxygen Evolution Reaction on Pt(111) Electrode
  K. Iizuka et al., BL-3A

• Development of High-Repetition-Rate Time-Resolved Resonant Soft X-Ray Scattering Measurement System at the Photon Factory
  R. Fukaya et al., BL-16A, 19B

2021

• X-Ray Detection of Magnetic Octupole Order Producing a Large Anomalous Hall Effect
  M. Kimata et al., BL-16A

2020

• Observation of Nanometric Square Skyrmion Lattice in Centrosymmetric Tetragonal Magnet GdRu₂Si₂
  N. D. Khanh et al., BL-3A

• Triangular-to-Square Lattice Transformation of Metastable Skyrmions
  R. Takagi et al., BL-16A

• Soft X-Ray Vortex Beam Detected by Inline Holography
  Y. Ishii, BL-13A, 16A

2019

• Magnetic Skyrmion Lattice in Gd-Based Centrosymmetric Magnets
  T. Kurumaji et al., BL-3A

• Sub-Molecular Structural Relaxation at a Physisorbed van der Waals Interface with Monolayer Organic Single-Crystal Semiconductors Revealed by X-Ray Reflectivity Measurements
  A. Yamamura et al., BL-3A

• Element-Specific Coherent Soft X-Ray Diffraction Imaging Study of the Skyrmion-Hosting Compound Co₈Zn₈Mn₄
  Y. Yamasaki et al., BL-16A

2018

• Magnetic Skyrmion Lattice in Gd₂PdSi₃
  T. Kurumaji et al., BL-3A

• Helical Ordering of Spin Trimers in Gd₃Ru₄Al₁₂ with a Distorted Kagome Lattice
  T. Matsumura, BL-3A

• Commensurate vs Incommensurate Charge Ordering near the Superconducting Dome Ir_1-xPt_xTe₂ Revealed by Resonant X-Ray Scattering
  K. Takubo et al., BL-4C

• Microscopic Origin of the Ferroelectricity in Multiferroics SmMn₂O₅ Studied by Resonant Soft X-Ray Scattering
  Y. Ishii et al., BL-3A, 4C, 8A, 16A, 19B

• Surface Electron Density Analysis of Organic Semiconductors
  Y. Wakabayashi et al., BL-3A

2017

• Thickness Dependence and Critical Thickness of Charge and Magnetic Orderings in Antiferromagnetic Perovskite La_1/3Sr_2/3FeO₃ Thin Films
  K. Yamamoto et al., BL-19B, 4C

• Electric Field and Strain-Induced Transformation of Magnetic Skyrmion in a Chiral Multiferroic Cu₂OSeO₃
  Y. Yamasaki, BL-16A

• Coherent Soft X-Ray Diffraction Imaging of Skyrmion Crystal in a Chiral Magnet FeGe
  Y. Yamasaki, BL-16A

2016

• Crystal Structure and Magnetic Properties of Nanosized Y₃Fe₅O₁₂ Epitaxial Layers for Microwave Applications
  N. S. Sokolov et al., BL-3A, 16A

• X-Ray Diffraction Study of Charge Density Waves in the Antiferromagnet GdNiC₂
  S. Shimomura et al., BL-3A

• Structural Change of the Rutile-TiO₂(110) Surface during the Water Wettability Transition Studied by X-Ray CTR Scattering
  T. Shirasawa et al., AR-NW2A, BL-4C

2015

• Revealing the Magnetic Order in a New Dirac Antiferromagnet EuMnBi₂ by Resonant X-Ray Magnetic Scattering
  H. Sakai et al., BL-3A

• Formation of Skyrmion Crystal in FeGe as Probed by Small-Angle Resonant Soft X-Ray Scattering
  Y. Yamasaki et al., BL-16A

• Magnetic Structures of SrIrO₃/SrTiO₃ Superlattices Studied by Resonant X-Ray Diffraction
  J. Matsuno et al., BL-3A

• Surface Ordering of Electron Degrees of Freedom in LaCoO₃ Thin Film
  Y. Yamasaki et al., BL-3A, 4C, 16A

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