Physics and astronomy
Angle-resolved photoemission spectroscopy (ARPES): probing electronic structure and many-body interactions
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Complex phenomenon in quantum materials is a major theme of physics today.  As better controlled model systems, a sophisticated understanding of the universality and diversity of these solids may lead to revelations well beyond themselves. Angle-resolved photoemission spectroscopy (ARPES), formulated after Einstein’s photoelectric effect, has been a key tool to uncover the microscopic processes of the electrons that give rise to the rich physics in these solids. Over the last three decades, the improved resolution and carefully matched experiments have been the keys to turn this technique into a leading experimental probe of electronic structures and many-body effects. 

Drawing upon examples spanning from novel superconductors and topological materials to magnetic and one-dimensional materials, we illustrate ARPES's pivotal role in testing ideas, benchmarking theoretical frameworks, uncovering unexpected phenomena, and elucidating the fingerprints of many-body interactions. Moreover, we demonstrate how the integration of modern ultrafast UV lasers and spin polarimetry has empowered photoemission spectroscopy to capture essential microscopic quantities of electrons—energy, momentum, spin, and temporal dynamics—yielding invaluable insights from a wealth of rich and precise information.

 

Keywords:
band structure
electron correlation
unconventional superconductors
topological insulators
DOI: https://doi.org/10.61109/cs.202405.130
Submitted
01 April, 2024
Accepted
13 May, 2024
Published
23 May, 2024
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Z.-X. Shen, Angle-resolved photoemission spectroscopy (ARPES): probing electronic structure and many-body interactions, Coshare Science 02, v4, 1-43 (2024).
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Z.-X. Shen, Angle-resolved photoemission spectroscopy (ARPES): probing electronic structure and many-body interactions, Coshare Science 02, video-4, 1-43 (2024).
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