61 citations · 592 across the 33 of their papers we have counts for
33 papers
Possibility of ferro-octupolar order in BaCaOsO assessed by X-ray magnetic dichroism measurements
Goro Shibata, Naomi Kawamura, Jun Okamoto +9
Localized electrons in a cubic crystal field possess multipoles such as electric quadrupoles and magnetic octupoles. We studied the cubic double perovskite BaCaOsO c…
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…
Cr doping-induced ferromagnetism in the spin-glass Cd1-xMnxTe studied by x-ray magnetic circular dichroism
V. K. Verma, S. Sakamoto, K. Ishikawa +7
The prototypical diluted magnetic semiconductor Cd1-xMnxTe is a spin glass (x<0.6) or an antiferromagnet (x>0.6), but becomes ferromagnetic upon doping with a small amount of Cr at…
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…
Alternation of Magnetic Anisotropy Accompanied by Metal-Insulator Transition in Strained Ultrathin Manganite Heterostructures
Masaki Kobayashi, Le Duc Anh, Masahiro Suzuki +6
Fundamental understanding of interfacial magnetic properties in ferromagnetic heterostructures is essential to utilize ferromagnetic materials for spintronic device applications. I…
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…
Extended superconducting dome of electron-doped cuprates after protect annealing revealed by ARPES
C. Lin, T. Adachi, M. Horio +17
The electron-doped cuprates are usually characterized by a more robust antiferromagnetic phase and a much narrower superconducting (SC) dome than those of the hole-doped counterpar…
Giant perpendicular magnetic anisotropy in Ir/Co/Pt multilayers
Yong-Chang Lau, Zhendong Chi, Tomohiro Taniguchi +8
We have studied the magnetic properties of multilayers composed of ferromagnetic metal Co and heavy metals with strong spin orbit coupling (Pt and Ir). Multilayers with symmetric (…
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…
Electronic structure of the novel high- ferromagnetic semiconductor (Ga,Fe)Sb: x-ray magnetic circular dichroism and resonance photoemission spectroscopy studies
Shoya Sakamoto, Nguyen Thanh Tu, Yukiharu Takeda +11
The electronic structure and the magnetism of the novel ferromagnetic semiconductor (Ga,Fe)Sb, whose Curie temperature can exceed room temperature, were investigated by…
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),…
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…