Recent remarkable progress in angle-resolved photoelectron spectroscopy (ARPES) has
enabled the direct observation of the band structures of 4f and 5f materials. In particular …

Actinide-based compounds exhibit unique physics due to the presence of 5f electrons, and
serve in many cases as important technological materials. Targeted thin film synthesis of …

In heavy-fermion compounds, the dual character of f electrons underlies their rich and often
exotic properties like fragile heavy quasiparticles, a variety of magnetic orders and …

Over the past five years we have developed a solution based technique for synthesizing
high quality epitaxial thin films of actinide materials. These films include oxides (UO 2, U 3 O …

Novel electronic phenomena frequently form in heavy-fermions because of the mutual
localized and itinerant nature of f-electrons. On the magnetically ordered side of the heavy …

Ultrafast optical spectroscopy is used to study the antiferromagnetic f-electron system USb 2.
We observe the opening of two charge gaps at low temperatures (<? format?>≲<? format?> …

We have elucidated the nature of the electron correlation effect in uranium compounds by
imaging the partial U 5 f density of states (pDOS) of typical itinerant, localized, and heavy …

In uranium-based heavy fermion systems, the 5 f electrons display an intermediate character
between partial localization and partial itinerancy, which makes the Kondo problem more …

A brief review of selected experimental photoemission works on URu2Si2 spanning almost
25 years is presented. We focus on the areas of importance for both the paramagnetic (PM) …

We have shown that the kink behavior in the spectral function of a heavy fermion can appear
during the formation of the Kondo resonance (KR) band and the hybridization gap. We have …