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Band structures of 4$$f$$ and 5$$f$$ materials studied by angle-resolved photoelectron spectroscopy

Fujimori, Shinichi   

Recent remarkable progresses in angle resolved photoelectron spectroscopy (ARPES) made it possible to directly observe the band structures of 4$$f$$ and 5$$f$$ materials. In particular, ARPES with various light sources such as laser or high-energy synchrotron radiations shed light on the bulk band structures of strongly-correlated materials with the energy scales from few meV to several eV. The main purpose of the present article is to summarize the behaviors of 4$$f$$ and 5$$f$$ band structures of various rare earth and actinide materials observed by modern ARPES techniques, and understand how they can be described by various theoretical frameworks. For 4$$f$$-electron materials, ARPES studies of CeMIn$$_5$$ and YbRh$$_2$$Si$$_2$$ with various incident photon energies are summarized. For U 5$$f$$ compounds, ARPES studies of UFeGa$$_5$$, UPd$$_3$$, and URu$$_2$$Si$$_2$$ are summarized based on various ARPES studies. The present status of the field as well as possible future directions are discussed.



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Category:Physics, Condensed Matter



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