RASOR: An advanced instrument for soft x-ray reflectivity and diffraction

Beale, T. A. W.; Hase, Thomas P. A.; Iida, Tsutomu; Endo, Kazuhiko; Steadman, P.; Marshall, Andrew; Dhesi, S. S.; Laan, G. van der; Hatton, P. D.

doi:10.1063/1.3458004

Cited by 31 publications

(30 citation statements)

References 73 publications

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“…On the other hand, in the soft xray range, covering the very interesting L-edges of 3d transition metals, the situation is made more difficult by the low efficiency of optical elements. Indeed the measurement of linear polarization of scattered photons has never been done in a soft-RIXS experiment, whereas it has been realized in the recent years in instrumentation with limited or no energy analysis capabilities 9,10,11,12,13 . The only case of combined polarization and energy analysis was realized by Duda et al 14 who exploited the circular dichroism of the L 3 resonant reflectivity from a magnetic Fe mirror to obtain sensitivity to circular polarization.…”

Section: Introductionmentioning

confidence: 99%

The simultaneous measurement of energy and linear polarization of the scattered radiation in resonant inelastic soft x-ray scattering

Braicovich

Minola

Dellea

et al. 2014

Review of Scientific Instruments

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Resonant Inelastic X-ray Scattering (RIXS) in the soft x-ray range is an element-specific energyloss spectroscopy used to probe the electronic and magnetic excitations in strongly correlated solids. In the recent years, RIXS has been progressing very quickly in terms of energy resolution and understanding of the experimental results, but the interpretation of spectra could further improve, sometimes decisively, from a full knowledge of the polarization of incident and scattered photons. Here we present the first implementation, in a high resolution RIXS spectrometer used to analyze the scattered radiation, of a device allowing the measurement of the degree of linear polarization. The system, based on a graded W/B 4 C multilayer mirror installed in proximity of the CCD detector, has been installed on the AXES spectrometer at the ESRF; it has been fully characterized and it has been used for a demonstration experiment at the Cu L 3 edge on a high-Tc superconducting cuprate. The loss in efficiency suffered by the spectrometer equipped with this test facility was a factor 17.5. We propose also a more advanced version, suitable for a routine use on the next generation of RIXS spectrometers and with an overall efficiency up to 10%.

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Section: Introductionmentioning

confidence: 99%

The simultaneous measurement of energy and linear polarization of the scattered radiation in resonant inelastic soft x-ray scattering

Braicovich

Minola

Dellea

et al. 2014

Review of Scientific Instruments

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“…The diffracted x-rays are detected with a charge-coupled device (CCD) camera in the ultrahigh vacuum scattering chamber RASOR on beamline I10 at the Diamond Light Source. 32 A magnetic field was applied to the sample whose strength and tilt angle, c, with respect to the surface normal can be varied. The incident, r-polarized x-rays were at .…”

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confidence: 99%

Imaging and manipulation of skyrmion lattice domains in Cu2OSeO3

Zhang

Bauer

Berger

et al. 2016

Applied Physics Letters

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Nanoscale chiral skyrmions in noncentrosymmetric helimagnets are promising binary state variables in high-density, low-energy nonvolatile memory. Nevertheless, they normally appear in an ordered, single-domain lattice phase, which makes it difficult to write information unless they are spatially broken up into smaller units, each representing a bit. Thus, the formation and manipulation of skyrmion lattice domains is a prerequisite for memory applications. Here, using an imaging technique based on resonant magnetic x-ray diffraction, we demonstrate the mapping and manipulation of skyrmion lattice domains in Cu2OSeO3. The material is particularly interesting for applications owing to its insulating nature, allowing for electric field-driven domain manipulation.

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“…Soft X-ray diffraction measurements were taken using the RASOR diffractometer [28] on the branch-line of the I06 beamline at Diamond Light Source. The linear polarisation state of the incident beam was rotated through 90…”

Section: Methodsmentioning

confidence: 99%

Advances in the understanding of multiferroics through soft X-ray diffraction

Beale

Wilkins

Johnson

et al. 2012

Eur. Phys. J. Spec. Top.

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Abstract. The magneto-electric multiferroic TbMn 2O5 has a complex magnetic structure in three different magnetically ordered phases. We have determined the nature of the induced magnetic order on the oxygen sites in the commensurate magnetic phase through full linear X-ray polarisation analysis at the oxygen K edge. This has been achieved rotating the linear polarisation of the incident beam at the source, and using multilayers to analyse the polarisation state of the scattered X-ray beam. We have confirmed that the anisotropy of the magnetic scattering at the oxygen edge is consistent with the anisotropy of the manganese magnetic structure.

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RASOR: An advanced instrument for soft x-ray reflectivity and diffraction

Cited by 31 publications

References 73 publications

The simultaneous measurement of energy and linear polarization of the scattered radiation in resonant inelastic soft x-ray scattering

The simultaneous measurement of energy and linear polarization of the scattered radiation in resonant inelastic soft x-ray scattering

Imaging and manipulation of skyrmion lattice domains in Cu2OSeO3

Advances in the understanding of multiferroics through soft X-ray diffraction

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