Applications of X-ray fluorescence holography to determine local lattice distortions

Hayashi, Kouichi; Happo, Naohisa; Hosokawa, Shinya

doi:10.1016/j.elspec.2014.07.008

Cited by 15 publications

(9 citation statements)

References 35 publications

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“…Because of the short probing depth of photoelectrons, photoelectron holography is one of the most effective methods for studying surface and subsurface atomic structures in 3D. Complementally, 3D atomic arrangement images of the bulk can be obtained by fluorescent x-ray holography having longer probing depth2728.…”

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confidence: 99%

Photoelectron Holographic Atomic Arrangement Imaging of Cleaved Bimetal-intercalated Graphite Superconductor Surface

Matsui

Eguchi

Nishiyama

et al. 2016

Sci Rep

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From the C 1s and K 2p photoelectron holograms, we directly reconstructed atomic images of the cleaved surface of a bimetal-intercalated graphite superconductor, (Ca, K)C8, which differed substantially from the expected bulk crystal structure based on x-ray diffraction (XRD) measurements. Graphene atomic images were collected in the in-plane cross sections of the layers 3.3 Å and 5.7 Å above the photoelectron emitter C atom and the stacking structures were determined as AB- and AA-type, respectively. The intercalant metal atom layer was found between two AA-stacked graphenes. The K atomic image revealing 2 × 2 periodicity, occupying every second centre site of C hexagonal columns, was reconstructed, and the Ca 2p peak intensity in the photoelectron spectra of (Ca, K)C8 from the cleaved surface was less than a few hundredths of the K 2p peak intensity. These observations indicated that cleavage preferentially occurs at the KC8 layers containing no Ca atoms.

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confidence: 99%

Photoelectron Holographic Atomic Arrangement Imaging of Cleaved Bimetal-intercalated Graphite Superconductor Surface

Matsui

Eguchi

Nishiyama

et al. 2016

Sci Rep

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“…This is comparable with the average R-factors of the Mn atoms of the synchrotron radiation [B-factor $ 26 A ˚2 (Umena et al, 2011)] or XFEL [B-factor $ 24 A ˚2 (Suga et al, 2015)] structures, suggesting that, aside from dynamic fluctuations caused by thermal vibrations at 100 K, the atoms in the Mn 4 CaO 5 cluster also have large positional fluctuations within the crystal. Though we were only able to extract average isotropic fluctuations in this work, we expect that in future work, the radial and angular positional fluctuations of Mn atoms can be extracted from more accurate hologram patterns, as this has already been demonstrated in XFH experiments on inorganic samples and organic crystals (Hosokawa et al, 2013;Hayashi et al, 2014;Ang et al, 2021;Kizaki et al, 2022). Once this is realized, valuable information to help understand the mechanisms of the oxidation process in PSII will be obtainable.…”

Section: Discussionmentioning

confidence: 79%

“…Until now, the effects of atomic fluctuations have been introduced into the hologram calculations by introducing a distribution of the atomic positions in the atomic model used in the calculations. This can include random Gaussian distributions in the atomic positions (Hayashi et al, 2014;Hosokawa et al, 2013;Kimura et al, 2020) or, alternatively, using atomic positions extracted from molecular dynamics simulations (Ang et al, 2021). Although these are good approximations that can result in the adequate reproduction of the atomic reconstruction, using a DWF or damping term directly in the hologram calculation is a simpler and more direct way to calculate the hologram pattern.…”

Section: Discussionmentioning

confidence: 99%

Development of serial X-ray fluorescence holography for radiation-sensitive protein crystals

Ang¹,

Umena²,

Sato‐Tomita³

et al. 2023

J Synchrotron Radiat

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X-ray fluorescence holography (XFH) is a powerful atomic resolution technique capable of directly imaging the local atomic structure around atoms of a target element within a material. Although it is theoretically possible to use XFH to study the local structures of metal clusters in large protein crystals, the experiment has proven difficult to perform, especially on radiation-sensitive proteins. Here, the development of serial X-ray fluorescence holography to allow the direct recording of hologram patterns before the onset of radiation damage is reported. By combining a 2D hybrid detector and the serial data collection used in serial protein crystallography, the X-ray fluorescence hologram can be directly recorded in a fraction of the measurement time needed for conventional XFH measurements. This approach was demonstrated by obtaining the Mn Kα hologram pattern from the protein crystal Photosystem II without any X-ray-induced reduction of the Mn clusters. Furthermore, a method to interpret the fluorescence patterns as real-space projections of the atoms surrounding the Mn emitters has been developed, where the surrounding atoms produce large dark dips along the emitter–scatterer bond directions. This new technique paves the way for future experiments on protein crystals that aim to clarify the local atomic structures of their functional metal clusters, and for other related XFH experiments such as valence-selective XFH or time-resolved XFH.

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“…erefore, XFH is very suitable for the analysis of the atomic structure around the impure atoms in the crystal. e research of Hayashi et al [48] also proved this, for he pointed out that XFH can be used to observe three-dimensional atomic images around specific elements within a radius of nm order and described the local lattice distortions around specific elements. In 2006, Kopecký et al [49] used X-ray diffuse scattering holography to determine the position of Mn atoms in GaMnAs doped with Mn and obtained new information about the local atomic structure (Figure 3).…”

Section: Applicationsmentioning

confidence: 85%

Applications of X-Ray Holography

Shi

Yang

2021

International Journal of Optics

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X-ray holography is widely used in material, biology, and industry fields due to its potential to measure the microstructure and dynamic change of objects. In this review, the principle of X-ray holography and the development of this technology in different application fields are systematically summarized and discussed. Through analyzing the advancement of X-ray sources and recording medium, the research and development direction of X-ray holography are prospected and the overview on current strategies of novel X-ray holography is presented. It is proved that X-ray holography, as a powerful nondestructive measurement method, can be applied to a wide range of objects.

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Applications of X-ray fluorescence holography to determine local lattice distortions

Cited by 15 publications

References 35 publications

Photoelectron Holographic Atomic Arrangement Imaging of Cleaved Bimetal-intercalated Graphite Superconductor Surface

Photoelectron Holographic Atomic Arrangement Imaging of Cleaved Bimetal-intercalated Graphite Superconductor Surface

Development of serial X-ray fluorescence holography for radiation-sensitive protein crystals

Applications of X-Ray Holography

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