AI Article Synopsis
- Developed a cutting-edge laser-based spectroscopy apparatus (µ-SARPES) for detailed electronic analysis with micrometer resolution.
- Combines advanced components like a high-resolution spectrometer, focused 6 eV laser, precise sample control, and a spin detector to achieve impressive energy resolution.
- Demonstrated the system's capabilities through experiments on topological insulators and patterned gold on silicon substrates, revealing intricate electronic structures and spin polarization.
Article Abstract
We have developed a state-of-the-art apparatus for laser-based spin- and angle-resolved photoemission spectroscopy with micrometer spatial resolution (µ-SARPES). This equipment is realized by the combination of a high-resolution photoelectron spectrometer, a 6 eV laser with high photon flux that is focused down to a few micrometers, a high-precision sample stage control system, and a double very-low-energy-electron-diffraction spin detector. The setup achieves an energy resolution of 1.5 (5.5) meV without (with) the spin detection mode, compatible with a spatial resolution better than 10 µm. This enables us to probe both spatially-resolved electronic structures and vector information of spin polarization in three dimensions. The performance of µ-SARPES apparatus is demonstrated by presenting ARPES and SARPES results from topological insulators and Au photolithography patterns on a Si (001) substrate.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10766951 | PMC |
| http://dx.doi.org/10.1038/s41598-023-47719-z | DOI Listing |
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