18 Papers
93 Citations
K. Mamiya is an academic researcher from Japan Atomic Energy Research Institute. The author has contributed to research in topics: Magnetic circular dichroism & Photoemission spectroscopy. The author has an hindex of 9, co-authored 14 publications.
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Papers
Photoemission and Hartree-Fock studies of oxygen-hole ordering in charge-disproportionated La 1 − x Sr x FeO 3
TL;DR: In this article, the Hartree-Fock calculations indicate that ordering of oxygen holes indeed occurs in the charge disproportionated state, and they find a systematic decrease of the spectral intensity near Fermi level toward $x=0.67.
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Metal-insulator crossover behavior at the surface of NiS 2
D. D. Sarma,S. R. Krishnakumar,E. Weschke,Christian Schüßler-Langeheine,Chandan Mazumdar,L. Kilian,G. Kaindl,K. Mamiya,S.-I. Fujimori,A. Fujimori,A. Fujimori,T. Miyadai +11 more
TL;DR: In this article, a detailed high-resolution electron spectroscopic investigation of the NiS and related Se-substituted compounds was performed, and the evolution of the spectral function with decreasing temperature was characterized by a continuous depletion of the single-particle spectral weight at the Fermi energy and the development of a gap-like structure below a characteristic temperature, providing evidence for a metal-insulator crossover behavior at the surfaces of these compounds.
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Antiferromagnetic-to-ferromagnetic transition induced by diluted Co in Sr Fe 1 − x Co x O 3 : Magnetic circular x-ray dichroism study
Jun Okamoto,K. Mamiya,S.-I. Fujimori,Tetsuo Okane,Yuji Saitoh,Yasuji Muramatsu,Kenji Yoshii,A. Fujimori,A. Fujimori,Arata Tanaka,M. Abbate,T. Koide,Shintaro Ishiwata,Shuji Kawasaki,Mikio Takano +14 more
TL;DR: In this article, the magnetic moments of the Fe and Co states under the Magenetic field of 0.3em was studied by magnetic circular x-ray dichroism and it was shown that the spin polarization of Fe gradually increases with Co concentration, indicating that the Co moment is nearly alligned already in the antiferromagnetic phase.
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Soft x-ray magnetic circular dichroism study of weakly ferromagnetic Zn1−xVxO thin film
Yukiaki Ishida,J. I. Hwang,Masaki Kobayashi,Yukiharu Takeda,K. Mamiya,Jun Okamoto,S.-I. Fujimori,Tetsuo Okane,K. Terai,Yuichi Saitoh,Yasuji Muramatsu,A. Fujimori,Akinori Tanaka,H. Saeki,Tomoya Kawai,Hitoshi Tabata +15 more
TL;DR: In this article, the authors performed a soft x-ray magnetic circular dichroism (XMCD) study of a Zn1−xVxO thin film, which showed a small ferromagnetic moment.
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