Satoru Hamamoto
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View article: Hybridized and Localized 4f Electronic States of Nd-based Intermetallic Compounds in Cubic Symmetry Probed by High-Energy Photoemission
Hybridized and Localized 4f Electronic States of Nd-based Intermetallic Compounds in Cubic Symmetry Probed by High-Energy Photoemission Open
We have performed soft and hard X-ray photoemission spectroscopies on NdTi2Al20 and NdBe13 which show antiferromagnetic ordering at low temperatures. The Nd 3d core-level photoemission and Nd 3d-4f valence-band resonant photoemission spect…
View article: Fingerprints of Mott and Slater gaps in the core-level photoemission spectra of antiferromagnetic iridates
Fingerprints of Mott and Slater gaps in the core-level photoemission spectra of antiferromagnetic iridates Open
We present Ir $4f$ core-level hard-x-ray photoemission spectroscopy (HAXPES) experiments conducted across antiferromagnetic (AFM) ordering transition in Ruddlesden-Popper iridates Sr$_2$IrO$_4$ and Sr$_3$Ir$_2$O$_7$. The Ir $4f$ spectra ex…
View article: Demonstration of efficient transfer learning in segmentation problem in synchrotron radiation X-ray CT data for epoxy resin
Demonstration of efficient transfer learning in segmentation problem in synchrotron radiation X-ray CT data for epoxy resin Open
Synchrotron radiation X-ray computed tomography (CT) provides information about the three-dimensional electron density inside a sample with a high spatial resolution. Recently, the need to examine the internal structure of materials compos…
View article: Impact of the ground-state $4f$ symmetry for anisotropic $cf$-hybridization in the heavy fermion superconductor CeNi$_{2}$Ge$_{2}$
Impact of the ground-state $4f$ symmetry for anisotropic $cf$-hybridization in the heavy fermion superconductor CeNi$_{2}$Ge$_{2}$ Open
We report the ground-state symmetry of the Ce $4f$ states in the heavy fermion superconductor CeNi$_{2}$Ge$_{2}$, yielding anisotropic $cf$-hybridization between the Ce $4f$ states and conducting electrons. By analyzing linear dichroism in…
View article: Bulk superconductivity in Pb-substituted BiS$_{\bf 2}$-based compounds studied by hard-x-ray spectroscopy
Bulk superconductivity in Pb-substituted BiS$_{\bf 2}$-based compounds studied by hard-x-ray spectroscopy Open
In this study, we investigate the bulk electronic structure of Pb-substituted LaO$_{0.5}$F$_{0.5}$BiS$_2$ single crystals, using two types of hard-x-ray spectroscopy. High-energy-resolution fluorescence-detected x-ray absorption spectrosco…
View article: Valence fluctuation in Yb<sub>3</sub>Si<sub>5</sub> probed by synchrotron X-ray photoemission spectroscopy
Valence fluctuation in Yb<sub>3</sub>Si<sub>5</sub> probed by synchrotron X-ray photoemission spectroscopy Open
We report the direct evidence of valence fluctuation in the thermoelectric material Yb 3 Si 5 by using synchrotron X-ray photoemission spectroscopy. The Yb 3 d core level photoemission spectrum of a Yb 3 Si 5 single crystal shows clear sep…
View article: Ground State Local 4<i>f</i> Symmetry of CeAgSb<sub>2</sub> Probed by Linearly Polarized Hard X-ray Photoemission
Ground State Local 4<i>f</i> Symmetry of CeAgSb<sub>2</sub> Probed by Linearly Polarized Hard X-ray Photoemission Open
We have performed a linearly polarized hard X-ray photoemission (HAXPES) for CeAgSb 2 in the paramagnetic phase.The Ce 3d 5/2 core-level HAXPES spectra show the linear dichroism, reflecting the orbital anisotropy of the 4 f states.The grou…
View article: Local 4<i>f</i>Electronic Structure in PrAg<sub>2</sub>In Studied by Polarized X-Ray Absorption and Photoemission Spectroscopy
Local 4<i>f</i>Electronic Structure in PrAg<sub>2</sub>In Studied by Polarized X-Ray Absorption and Photoemission Spectroscopy Open
The electronic structure of PrAg 2 In has been investigated by soft X-ray absorption spectroscopy (XAS) and linearly polarized hard X-ray photoemission spectroscopy (HAXPES).The Pr M 4,5 XAS shows that the Pr valence of PrAg 2 In is fully …
View article: Linear Dichroism in Angle-Resolved Core-Level Photoemission Spectra Reflecting 4<i>f</i>Ground-State Symmetry of Strongly Correlated Cubic Pr Compounds
Linear Dichroism in Angle-Resolved Core-Level Photoemission Spectra Reflecting 4<i>f</i>Ground-State Symmetry of Strongly Correlated Cubic Pr Compounds Open
We report experimentally observed linear dichroism in angle-resolved core-level photoemission spectra of PrIr2Zn20 and PrB6 in cubic symmetry. The different anisotropic 4f charge distributions between the compounds due to the crystalline-e…