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- N. Hiraoka, T. Hagiya, and K. Matsuda “Screening response of valence and core electrons in a metal: Inelastic x-ray scattering study” Phys Rev. B 108, 195104 (2023)
- T. Hagiya, K. Matsuda, N. Hiraoka, Y. Kajihara, K. Kimura, and M. Inui “Static density response function studied by inelastic x-ray scattering: Friedel oscillations in solid and liquid Li”, Phys Rev. B 102, 054208 (2020)
- N. Hiraoka, Y. Yang, T. Hagiya, A. Niozu, K. Matsuda, S. Huotari, M. Holzmann, and D. M. Ceperley, “Direct observation of the momentum distribution and renormalization factor in lithium”, Phys Rev. B 101, 165124 (2020)
- H. Fukui, L. T. Anh, M. Wada, N. Hiraoka, T. Iitaka, N. Hirao, Y. Akahama, and T. Irifune, “Electronic structure of dense solid oxygen from insulator to metal investigated with X-ray Raman scattering”, Proc. Nat. Acad. Sci. 116, 21385 (2019)
- S.-F. Hung, Y.-T. Chan, C.-C. Chang, M.-K. Tsai, Y.-F. Liao, N. Hiraoka, C.-S. Hsu, and H. M. Chen, “Identification of Stabilizing High-Valent Active Sites by Operando High-Energy Resolution Fluorescence-Detected X‑ray Absorption Spectroscopy for High-Efficiency Water Oxidation”, J. Am. Chem. Soc., 140, 17263 (2018)
- N. Hiraoka and T. Nomura, “Electron momentum densities near Dirac cones: Anisotropic Umklapp scattering and momentum broadening”, Scientific Reports 7 565 (2017)
- N. Hiraoka, M. Takahashi, W. B. Wu, C. H. Lai, K. D. Tsuei, D. J. Huang, “Magnetic circular dichroism of nonresonant x-ray Raman scattering”, Phys. Rev. B. 91, 241112(R) (2015)
- A. Nyrow, J.S. Tse, N. Hiraoka, S. Desgreniers, T.Buning, K. Mende, M. Tolan, M. Wilke, and C. Sternemann, “Pressure induced spin transition revealed by iron M2,3-edge spectroscopy” Appl. Phys Lett. 104, 262408 (2014)
- W. B. Wu, N. Hiraoka*, D. J. Huang*, S. W. Huang, K. D. Tsuei, M. van Veenendaal, J. v. d. Brink, Y. Sekio, T. Kimura, “Effective orbital symmetry of CuO: Examination by nonresonant inelastic x-ray scattering”, Phys. Rev. B. 88, 205129 (2013)
- N. Hiraoka, H. Fukui, H. Tanida, H. Toyokawa, Y.Q. Cai and K.D. Tsuei, “An X-ray Raman spectrometer for EXAFS studies on minerals: Bent Laue spectrometer with 20-keV x-rays”, J. Synchrot. Rad., 20, 266 (2013)
- T. Willers, F. Strigari, N. Hiraoka, Y. Q. Cai, M. W. Haverkort, K.-D. Tsuei, Y. F. Liao, S. Seiro, C. Geibel, F. Steglich, L. H. Tjeng, and A. Severing, “Determining the In-Plane Orientation of the Ground-State Orbital of CeCu2Si2” Phys. Rev. Lett. 109, 046401 (2012)
- N. Hiraoka, M. Suzuki, K. D. Tsuei, H. Ishii, Y. Q. Cai, M. W. Haverkort, C. C. Lee and W. Ku “dd excitations in three-dimensional q-space: A nonresonant inelastic x-ray scattering study on NiO”, EPL(Europhysics Lett.) 96, 37007 (2011)
- R. Nomura, H. Ozawa, S. Tateno, K. Hirose, J. Hernlund, S. Muto, H. Ishii and
N. Hiraoka, “Spin crossover and iron-rich silicate melt in the Earth’s deep mantle” Nature 473, 7346 (2011)
- N. Hiraoka, Y.Q. Cai, X-ray Raman scattering under high pressure, Synchrotron Radiation News 23, (2010), 26
- N. Hiraoka, H. Okamura, H. Ishii, K.D. Tsuei, I. Jarrige, Y.Q. Cai, " q-dependent dielectric function study by inelastic x-ray scattering and optical reflectivity measurements", European Physical Journal B, 70 (2009) 157
- R. Hambach, C. Giorgetti, N. Hiraoka, Y.Q. Cai, F. Sottile, A.G. Marinopoulos, F. Bechstedt, L. Reining, "Anomalous angular dependence of the dynamcal structure factor near Bragg reflections: Graphite", Phys. Rev. Lett., 101 (2008) 266406
- K. Yang, L.P.Chen, Y.Q.Cai, N. Hiraoka, S, Li, J. F. Zhao, D. W. Shen, H.F. Song, H. Tian, L. H. Bai, Z.H. Chen, Z.G.Shuai, and D. L. Feng, "Inelastic X-ray scattering study of Exiton Properties in an Organic Molecular Crystal", Phys. Rev. Lett., 98 (2007) 036404
- N. Hiraoka, T. Buslaps, V. Honkimaki, J. Afmad, H. Uwe, "Fermi surface nesting in Ba[1-x]K[x]BiO3 observed by Compton scattering: Three-dimensional momentum density reconstruction study", Phys. Rev. B, 75 (2007) 121101(R)
- N. Hiraoka, T. Buslaps, V. Honkimaki, T. Nomura, M. Itou, Y. Sakurai, Z.Q. Mao, Y. Maeno, "Momentum densities, Fermi surfaces and their temperature dependences in Sr2RuO4 studied by Compton scattering", Phys. Rev. B 74 (2006) 100501(R)
- N. Hiraoka, T. Buslaps, V. Honkimaki, and P. Suortti, "Performance of dispersion compensating scanning spectrometer for Compton profile measurements", Journal of Synchrotron Radiation 12 (2005) 670
- N. Hiraoka, H. Ishii, I. Jarrige, and Y. Q. Cai, "Inelastic x-ray scattering studies of low-energy charge excitations in graphite", Phys. Rev. B 72 (2005) 075103.
- N. Hiraoka, T. Buslaps, V. Honkimaki, H. Minami, and H. Uwe, "Fermi surface nesting in Ba[1-x]K[x]BiO[3] observed by Compton profile measurement", Phys. Rev. B 71 (2005) 205106.
- N. Hiraoka, T. Buslaps, V. Honkimaki, H. Guyot, and C. Schlenker , "Hidden one dimensionality in Fermi surfaces of eta-Mo4O11 observed by Compton scattering experiments", Phys. Rev. B 71 (2005) 125417.
- N. Hiraoka, M. Itou, A. Deb, Y. Sakurai, Y. Kakutani, A. Koizumi, N. Sakai, S. Uzuhara, S. Miyaki, H. Koizumi, K. Makoshi, N. Kikugawa, and Y. Maeno, "Ru-O orbital hybridization and orbital occupation in SrRuO3 : A magnetic Compton-profile study", Phys. Rev. B 70 (2004) 054420.
- N. Hiraoka, M. Itou, T. Ohata, M. Mizumaki, Y. Sakurai and N. Sakai,"A new X-ray spectrometer for high-resolution Compton profile measurements at SPring-8", Journal of Synchrotron Radiation 8 (2000) 26.
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