47 citations · 230 across the 22 of their papers we have counts for
22 papers
Orbital magnetic moments in FeCr2S4 studied by x-ray magnetic circular dichroism
V. K. Verma, J. Patra, V. R. Singh +8
We have investigated the element specific magnetic characteristics of single-crystal FeCr2S4 using x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD).…
Fe contribution to the magnetic anisotropy of -ordered FePt thin films studied by angle-dependent x-ray magnetic circular dichroism
Goro Shibata, Keisuke Ikeda, Takeshi Seki +9
Among magnetic thin films with perpendicular magnetic anisotropy (PMA), -ordered FePt has attracted significant attention because of its exceptionally strong PMA. However, th…
Origin of magnetically dead layers in spinel ferrites grown on : Effects of post-deposition annealing studied by XMCD
Yosuke Nonaka, Yuki K. Wakabayashi, Goro Shibata +8
We study the electronic and magnetic states of as-grown and annealed (111)/(111) () thin films with various thicknes…
Magnetic Properties and Electronic Configurations of Mn Ions in the Diluted Magnetic Semiconductor BaK(ZnMn)As Studied by X-ray Magnetic Circular Dichroism and Resonant Inelastic X-ray Scattering
H. Suzuki, G. Q. Zhao, J. Okamoto +18
The magnetic properties and the electronic excitations of the new diluted magnetic semiconductor BaK(ZnMn)As have been studied by x-ray magn…
Magnetic anisotropy of the van der Waals ferromagnet CrGeTe studied by angular-dependent XMCD
M. Suzuki, B. Gao, G. Shibata +12
The van der Waals ferromagnet CrGeTe (CGT) has a two-dimensional crystal structure where each layer is stacked through van der Waals force. We have investigated the nat…
Reduced magnetocrystalline anisotropy of CoFeO thin films studied by angle-dependent x-ray magnetic circular dichroism
Yosuke Nonaka, Yuki K. Wakabayashi, Goro Shibata +9
Spinel-type CoFeO is a ferrimagnetic insulator with the Néel temperature exceeding 790 K, and shows a strong cubic magnetocrystalline anisotropy (MCA) in bulk materials. Ho…
Large Orbital Magnetic Moment and Strong Perpendicular Magnetic Anisotropy in Heavily Intercalated FeTiS
Goro Shibata, Choongjae Won, Jaewook Kim +7
Titanium disulfide TiS, which is a member of the layered transition-metal dichalcogenides with the 1T-CdI-type crystal structure, is known to exhibit a wide variety of magn…
On the relationship between orbital moment anisotropy, magnetocrystalline anisotropy, and Dzyaloshinskii-Moriya interaction in W/Co/Pt trilayers
Zhendong Chi, Yong-Chang Lau, Vanessa Li Zhang +15
We have studied the Co layer thickness dependences of magnetocrystalline anisotropy (MCA), Dzyaloshinskii-Moriya interaction (DMI), and orbital moment anisotropy (OMA) in W/Co/Pt t…
Anisotropic spin distribution and perpendicular magnetic anisotropy in the layered ferromagnetic semiconductor (Ba,K)(Zn,Mn)As
Shoya Sakamoto, Guoqiang Zhao, Goro Shibata +14
Perpendicular magnetic anisotropy of the new ferromagnetic semiconductor (Ba,K)(Zn,Mn)As is studied by angle-dependent x-ray magnetic circular dichroism measurements. T…
Temperature evolution of magnetic phases near the thickness-dependent metal-insulator transition in LaSrMnO thin films observed by XMCD
Goro Shibata, Kohei Yoshimatsu, Enju Sakai +9
Perovskite-type manganites, which are well-known for their intriguing physical properties such as colossal magnetoresistance (CMR) and half metalicity, have been considered as cand…
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…
Relationship between charge redistribution and ferromagnetism at the heterointerface between perovskite oxides LaNiO and LaMnO
Miho Kitamura, Masaki Kobayashi, Enju Sakai +10
To investigate the relationship between the charge redistribution and ferromagnetism at the heterointerface between perovskite transition-metal oxides LaNiO (LNO) and LaMnO…
Magnetization process of the insulating ferromagnetic semiconductor (Al,Fe)Sb
Shoya Sakamoto, Le Duc Anh, Pham Nam Hai +12
We have studied the magnetization process of the new insulating ferromagnetic semiconductor (Al,Fe)Sb by means of x-ray magnetic circular dichroism. For an optimally doped sample w…
Anisotropic Charge Distribution Induced by Spin Polarization in LaSrMnO Thin Films Studied by X-ray Magnetic Linear Dichroism
Goro Shibata, Kohei Yoshimatsu, Keisuke Ishigami +17
Magnetic anisotropy of epitaxially grown thin films is affected by the strain from the substrates due to a combined effect of distorted electronic structure and spin-orbit interact…
Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor SrVFeAsO Studied by X-ray Magnetic Circular Dichroism
Masafumi Horio, Yukiharu Takeda, Hiromasa Namiki +10
We have performed x-ray magnetic circular dichroism (XMCD) measurements on the iron-based superconductor SrVFeAsO to study the origin of weak ferromagnetism (WFM) repor…
Systematic study of the electronic structure and the magnetic properties of a few-nm-thick epitaxial (Ni1-xCox)Fe2O4 (x = 0 - 1) layers grown on Al2O3(111)/Si(111) using soft X-ray magnetic circular dichroism: effects of cation distribution
Yuki K. Wakabayashi, Yosuke Nonaka, Yukiharu Takeda +10
We study the electronic structure and the magnetic properties of epitaxial (Ni1-xCox)Fe2O4(111) layers (x = 0 - 1) with thicknesses d = 1.7 - 5.2 nm grown on Al2O3(111)/Si(111) str…
Electronic States and Possible Origin of the Orbital-Glass State in a Nearly Metallic Spinel Cobalt Vanadate: An X-ray Magnetic Circular Dichroism Study
Yosuke Nonaka, Goro Shibata, Rui Koborinai +8
We have investigated the orbital states of the orbital-glassy (short-range orbital ordered) spinel vanadate CoVO using x-ray absorption spectroscopy (XAS),…
Pseudogap in electron-doped cuprates: Strong correlation leading to band splitting
M. Horio, S. Sakai, H. Suzuki +10
The pseudogap phenomena have been a long-standing mystery of the cuprate high-temperature superconductors. The pseudogap in the electron-doped cuprates has been attributed to band…
Effect(s) of Cobalt Substitution in -(Fe,Co)Pt Thin Films
Shoya Sakamoto, Kumar Srinivasan, Rui Zhang +9
We have studied the effect of cobalt substitution in -FeCoPt films by means of x-ray magnetic circular dichroism (XMCD) and first-principles calculations. The…
Magnetic anisotropy of -ordered FePt thin films studied by Fe and Pt -edges x-ray magnetic circular dichroism
K. Ikeda, T. Seki, G. Shibata +12
The strong perpendicular magnetic anisotropy of -ordered FePt has been the subject of extensive studies for a long time. However, it is not known which element, Fe or Pt…
Anisotropic spin-density distribution and magnetic anisotropy of strained LaSrMnO thin films: Angle-dependent x-ray magnetic circular dichroism
G. Shibata, M. Kitamura, M. Minohara +21
Magnetic anisotropies of ferromagnetic thin films are induced by epitaxial strain from the substrate via strain-induced anisotropy in the orbital magnetic moment and that in the sp…
Electronic structure and magnetic properties of magnetically dead layers in epitaxial CoFe2O4/Al2O3/Si(111) films studied by X-ray magnetic circular dichroism
Yuki K. Wakabayashi, Yosuke Nonaka, Yukiharu Takeda +10
Epitaxial CoFe2O4/Al2O3 bilayers are expected to be highly efficient spin injectors into Si owing to the spin filter effect of CoFe2O4. To exploit the full potential of this system…