Momentum‐resolved resonant inelastic X‐ray scattering on a single crystal under high pressure. (1st January 2014)

• Record Type: Journal Article
• Authors: Yoshida, Masahiro; Ishii, Kenji; Jarrige, Ignace; Watanuki, Tetsu; Kudo, Kazutaka; Koike, Yoji; Kumagai, Ken'ichi; Hiraoka, Nozomu; Ishii, Hirofumi; Tsuei, Ku‐Ding; Mizuki, Jun'ichiro
• Is Part Of: Journal of synchrotron radiation. Volume 21:Part 1(2014)
• Page Start: 131
• Page End: 135
• Publication Date: 2014-01-01
• Subjects: Synchrotron radiation -- Periodicals; Free electron lasers -- Periodicals; 539.73505
• DOI: 10.1107/S1600577513028944
• Languages: English
• ISSNs: 0909-0495

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A single‐crystal momentum‐resolved resonant inelastic X‐ray scattering (RIXS) experiment under high pressure using an originally designed diamond anvil cell (DAC) is reported. The diamond‐in/diamond‐out geometry was adopted with both the incident and scattered beams passing through a 1 mm‐thick diamond. This enabled us to cover wide momentum space keeping the scattering angle condition near 90°. Elastic and inelastic scattering from the diamond was drastically reduced using a pinhole placed after the DAC. Measurement of the momentum‐resolved RIXS spectra of Sr_2.5Ca_11.5Cu₂₄O₄₁ at the Cu <italic>K</italic>‐edge was thus successful. Though the inelastic intensity becomes weaker by two orders than the ambient pressure, RIXS spectra both at the center and the edge of the Brillouin zone were obtained at 3 GPa and low‐energy electronic excitations of the cuprate were found to change with pressure.</p> </abstract>