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- W4313483324 abstract "Three-dimensional (3D) electronic band structure is fundamental for understanding a vast diversity of physical phenomena in solid-state systems, including topological phases, interlayer interactions in van der Waals materials, dimensionality-driven phase transitions, etc. Interpretation of ARPES data in terms of 3D electron dispersions is commonly based on the free-electron approximation for the photoemission final states. Our soft-X-ray ARPES data on Ag metal reveals, however, that even at high excitation energies the final states can be a way more complex, incorporating several Bloch waves with different out-of-plane momenta. Such multiband final states manifest themselves as a complex structure and excessive broadening of the spectral peaks from 3D electron states. We analyse the origins of this phenomenon, and trace it to other materials such as Si and GaN. Our findings are essential for accurate determination of the 3D band structure over a wide range of materials and excitation energies in the ARPES experiment." @default.
- W4313483324 created "2023-01-06" @default.
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- W4313483324 date "2022-12-30" @default.
- W4313483324 modified "2023-09-30" @default.
- W4313483324 title "Are high-energy photoemission final states free-electron-like?" @default.
- W4313483324 doi "https://doi.org/10.48550/arxiv.2301.00033" @default.
- W4313483324 hasPublicationYear "2022" @default.
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