50 citations · 149 across the 9 of their papers we have counts for
9 papers
Light-enhanced gating effect at the interface of oxide heterostructure
Neha Wadehra, Ruchi Tomar, Yuichi Yokoyama +5
In semiconducting materials, electrostatic gating and light illumination are widely used stimuli to tune the electronic properties of the system. Here, we show a significant enhanc…
Soft X-ray Vortex Beam detected by In-line Holography
Yuta Ishii, Kohei Yamamoto, Yuichi Yokoyama +4
We demonstrate the in-line holography for soft x-ray vortex beam having an orbital angular momentum. A hologram is recorded as an interference between a Bragg diffraction wave from…
Hard and soft x-ray photoemission spectroscopy study of the new Kondo system SmO thin film
Shoya Sakamoto, Kenichi Kaminaga, Daichi Oka +15
SmO thin film is a new Kondo system showing a resistivity upturn around 10 K and was theoretically proposed to have a topologically nontrivial band structure. We have performed har…
Ultrafast electron localization in a correlated metal
Jose R. L. Mardegan, Serhane Zerdane, Giulia Mancini +27
Ultrafast electron delocalization induced by a fs laser pulse is a well-known process and is the initial step for important applications such as fragmentation of molecules or laser…
Study of photoinduced valence dynamics in EuNi(SiGe) through time-resolved X-ray absorption spectroscopy
Y. Yokoyama, K. Kawakami, Y. Hirata +10
The photoinduced valence dynamics of EuNi(SiGe) are investigated using time-resolved X-ray absorption spectroscopy for Eu -edge. Through the pump-pro…
Tensile-Strain Dependent Spin States in Epitaxial LaCoO Thin Films
Y. Yokoyama, Y. Yamasaki, M. Taguchi +11
The spin states of Co ions in perovskite-type LaCoO, governed by complex interplay between the electron-lattice interactions and the strong electron correlations, still…
Orbital order and fluctuations in the two-leg ladder materials BaFe ( = S and Se) and CsFeSe
Kou Takubo, Yuichi Yokoyama, Hiroki Wadati +10
The electronic structure of BaFe ( = S and Se) and CsFeSe in which two-leg ladders are formed by the Fe sites are studied by means of x-ray absorption and resonan…
Thickness dependence and dimensionality effects of charge and magnetic orderings in La1/3Sr2/3FeO3 thin films
Kohei Yamamoto, Yasuyuki Hirata, Masafumi Horio +9
We investigate the thickness effects on charge and magnetic orderings in Fe perovskite oxide La1/3Sr2/3FeO3/SrTiO3 thin films by hard x-ray and resonant soft x-ray scattering (RSXS…
Capturing ultrafast magnetic dynamics by time-resolved soft x-ray magnetic circular dichroism
Kou Takubo, Kohei Yamamoto, Yasuyuki Hirata +9
Experiments of time-resolved x-ray magnetic circular dichroism (Tr-XMCD) and resonant x-ray scattering at a beamline BL07LSU in SPring-8 with a time-resolution of under 50 ps are p…