High-Resolution Inelastic X-Ray Scattering I: Context, Spectrometers, Samples, and Superconductors

Baron, Alfred Q. R.

doi:10.1007/978-3-319-04507-8_41-2

Synchrotron Light Sources and Free-Electron Lasers 2019

DOI: 10.1007/978-3-319-04507-8_41-2

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High-Resolution Inelastic X-Ray Scattering I: Context, Spectrometers, Samples, and Superconductors

Alfred Q. R. Baron¹

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Cited by 2 publications

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“…A 2-Dimensional analyzer array at BL43LXU allowed parallel measurement of multiple transverse momentum transfers (see discussions in Refs. [28,29], see also Ref. [30]).…”

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confidence: 97%

Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering

et al. 2020

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Nematicity is ubiquitous in electronic phases of high-Tc superconductors, particularly in the Febased systems. We used inelastic x-ray scattering to extract the temperature-dependent nematic correlation length ξ from the anomalous softening of acoustic phonon modes in FeSe, underdoped Ba(Fe0.97Co0.03)2As2 and optimally doped Ba(Fe0.94Co0.06)2As2. In all cases, we find that ξ is well described by a power law (T − T0) −1/2 extending over a wide temperature range. We attributed this mean-field behavior and the extended fluctuation regime to a sizable nemato-elastic coupling, which may be detrimental to superconductivity. arXiv:2001.01343v1 [cond-mat.supr-con] 6 Jan 2020

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“…A 2-Dimensional analyzer array at BL43LXU allowed parallel measurement of multiple transverse momentum transfers (see discussions in Refs. [28,29], see also Ref. [30]).…”

mentioning

confidence: 97%

Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering

et al. 2020

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Effects of molecular shape and flexibility on fast sound of organic liquids

Yamaguchi

Yoshida

Hosokawa

et al. 2022

The Journal of Chemical Physics

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Inelastic X-ray scattering spectra of four organic liquids, n-hexane, cyclohexane, ethylene glycol dimethyl ether, and 1,4-dioxane, were measured and the sound velocity in the nm-1 wavenumber and meV energy regimes was determined. Compared with the corresponding values in the hydrodynamic limit, the sound velocity in the nm-1 regime was faster, and the positive dispersion of the longitudinal modulus was stronger in liquids composed of ring structures (cyclohexane and 1,4-dioxane) than in those of linear chain structures (n-hexane and ethylene glycol dimethyl ether). Molecular dynamics simulation of n-hexane and cyclohexane was also performed. The difference in the positive dispersion of the longitudinal modulus was reproduced by the simulation, and it was elucidated by the difference in the longitudinal modulus in the q = 0 limit and the THz frequency regime. The excess part of the longitudinal modulus from the hydrodynamic limit was further divided into various contributions, and the smaller excess modulus of n-hexane was mainly ascribed to two reasons. The first one is that the shear modulus of n-hexane is smaller in the THz regime and the second one is that the positive dispersion of the bulk modulus due to the vibrational energy relaxation is weaker. The second mechanism was further interpreted in terms of the fast vibrational energy relaxation of intramolecular modes associated with the chain deformation of n-hexane.

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High-Resolution Inelastic X-Ray Scattering I: Context, Spectrometers, Samples, and Superconductors

Cited by 2 publications

References 308 publications

Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering

Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering

Effects of molecular shape and flexibility on fast sound of organic liquids

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