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2018-08-13
18:56
[PUBDB-2018-02939] Journal Article
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ID-Full Field Microscopy of Elastic and Inelastic Scattering with Transmission off-axis Fresnel Zone Plates
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2018-08-10
17:51
Embargoed OpenAccess [PUBDB-2018-02898] Journal Article
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Diffractive X-ray Optics for Synchrotrons and Free-Electron Lasers
Published on 2018-08-16. Available in OpenAccess from 2019-02-16.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
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2018-05-08
17:10
OpenAccess [PUBDB-2018-01928] Journal Article
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Total 3s emission Yield as Bulk-Sensitive Probe for a True Soft X-ray Absorption Spectrum?
The detection of the true soft X-ray absorption typically needs specially prepared submicrometer thin samples for transmission measurements. Bulk experiments instead have to rely on yield methods, for example, electron yield with limitations for insulating samples, sensitivity to applied fields, and with limited bulk sensitivity. [...]
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2018-04-18
15:22
OpenAccess [PUBDB-2018-01787] Journal Article
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Multidimensional photoemission spectroscopy—the space-charge limit
Photoelectron spectroscopy, especially at pulsed sources, is ultimately limited by the Coulomb interaction in the electron cloud, changing energy and angular distribution of the photoelectrons. A detailed understanding of this phenomenon is crucial for future pump–probe photoemission studies at (x-ray) free electron lasers and high-harmonic photon sources. [...]
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2018-01-12
10:42
[PUBDB-2018-00596] Journal Article
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Short-wavelength free-electron laser sources and science: a review
This review is focused on free-electron lasers (FELs) in the hard to soft x-ray regime. The aim is to provide newcomers to the area with insights into: the basic physics of FELs, the qualities of the radiation they produce, the challenges of transmitting that radiation to end users and the diversity of current scientific applications. [...]
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2018-01-11
13:05
OpenAccess [PUBDB-2018-00478] Journal Article
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Momentum-resolved photoelectron absorption in surface barrier scattering on Ir(111) and graphene/Ir(111)
Time-of-flight momentum microscopy reveals sixfold symmetric sharp features of decreased intensity (dark lines) in constant-energy maps for clean Ir(111) and graphene/Ir(111). The dark lines have been observed for $p$- and $s$-polarized light in the photon-energy range of 20–27 eV and result from scattering of photoelectrons at the surface potential barrier [...]
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2018-01-10
13:15
OpenAccess [PUBDB-2018-00331] Journal Article
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Spin-filtered time-of-flight $k$-space microscopy of Ir – Towards the “complete” photoemission experiment
The combination of momentum microscopy (high resolution imaging of the Fourier plane) with an imaging spin filter has recently set a benchmark in k-resolution and spin-detection efficiency. Here we show that the degree of parallelization can be further increased by time-of-flight energy recording. [...]
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2018-01-10
13:13
OpenAccess [PUBDB-2018-00329] Journal Article
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Vectorial spin polarization detection in multichannel spin-resolved photoemission spectroscopy using an Ir(001) imaging spin filter
We report on spin- and angular-resolved photoemission spectroscopy using a high-resolution imaging spin filter based on a large Ir(001) crystal enhancing the effective figure of merit for spin detection by a factor of over 10$^3$ compared to standard single-channel detectors. Furthermore, we review the spin filter preparation and its lifetime [...]
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2018-01-09
16:34
Embargoed OpenAccess [PUBDB-2018-00300] Journal Article
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Hosting of surface states in spin–orbit induced projected bulk band gaps of W(1 1 0) and Ir(1 1 1)
Spin-momentum locking of surface states has attracted great interest in recent years due to envisioned technological applications in the field of spintronics. Normal metal surfaces like W(1 1 0) and Ir(1 1 1) show surface states with energy dispersions and spin-polarization textures, which are reminiscent of topologically non-trivial surface states. [...]
Published on 2017-05-24. Available in OpenAccess from 2018-05-24.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
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2018-01-09
16:17
OpenAccess [PUBDB-2018-00296] Journal Article
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High-resolution resonant inelastic extreme ultraviolet scattering from orbital and spin excitations in a Heisenberg antiferromagnet
We report a high-resolution resonant inelastic extreme ultraviolet (EUV) scattering study of the quantum Heisenberg antiferromagnet KCoF$_3$. By tuning the EUV photon energy to the cobalt M$_{23}$ edge, a complete set of low-energy 3d spin-orbital excitations is revealed [...]
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