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S. Ulstrup

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Open access Sep 2026

Micro- and nanoscale focusing across the extreme ultraviolet range of the ASTRID2 light source with a capillary optic.

Focusing of synchrotron light across the extreme ultraviolet (XUV) and soft x-ray regimes is increasingly desired for photoemission-based techniques where reduced beam width gives access to smaller samples, such as microscopic single crystals and functioning two-dimensional heterostructures and devices. Many existing f...

Alfred J. H. Jones, Zhi-Hao Jiang, A. Petersen et al. · 0 citations
Preprint Oct 2026

Direct view of exciton and carrier dynamics in twisted bilayer graphene

Twisted bilayer graphene (tBLG) on H-intercalated SiC (twist angle of $9 \pm 1^{\circ}$) is studied by position\mbox{-}, time\mbox{-}, and angle-resolved photoemission spectroscopy (ARPES). Both graphene layers are hole doped, with a Dirac-point offset of 30~meV. Time-resolved ARPES near the van Hove singularity reveal...

G. Gatti, A. S. Mortensen, Zhi-Hao Jiang et al. · 0 citations

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