Y. Ishida, J. I. Hwang, M. Kobayashi, A. Fujimori, H. Saeki, H. Tabata,
and T. Kawai: "High-energy spectroscopy study of the ferromagnetic diluted magnetic semiconductor
Zn1-xVxO", Physica B 351, 304 (2004)
J. I. Hwang, Y. Ishida, M. Kobayashi, H. Hirata, K. Takubo, T. Mizokawa,
A. Fujimori, J. Okamoto, K. Mamiya, Y. Saito, Y. Muramatsu, H. Ott, A. Tanaka,
T. Kondo, and H. Munekata: "High-energy spectroscopy study of the III-V nitride-based diluted magnetic semiconductor Ga1-xMnxN", Phys. Rev. B 72, 085216 (2005)
M. Kobayashi, Y. Ishida, J.I. Hwang, T. Mizokawa, A. Fujimori, J. Okamoto,
K. Mamiya, Y. Takeda, T. Okane, Y. Saitoh, Y. Muramatsu, A. Tanaka, H. Saeki,
H. Tabata, and T. Kawai : "Characterization of magnetic components in the diluted magnetic semiconductor Zn1-xCoxO by x-ray magnetic circular dichroism", Phys. Rev. B 72, 201201(R) (2005) cond-mat/0505387
M. Naeem, S. K. Hasanain, M. Kobayashi, Y. Ishida, A. Fujimori, Scott Buzby,
and S. Ismat Shah: "Effect of reducing atmosphere on the magnetism of Zn1-xCoxO (0<x<0.10) nanoparticles", Nanotechnology 17, 2675 (2006) cond-mat/0512597
Yuan-Hua Lin, Jingnan Cai Ce-Wen Nan, M. Kobayashi, and Jinliang He: "Electric and magnetic behaviors of Li and Co codoped ZnO thin film on Si (100) substrate", J. Appl. Phys. 99, 056107 (2006)
J. I. Hwang, Y. Ishida, M. Kobayashi, Y. Osafune, T. Mizokawa, A. Fujimori,
Y. Takeda, K. Terai, S.-I. Fujimori, Y. Saitoh, Y. Muramatsu, A. Tanaka,
T. Kondo, H. Munekata, M. Hashimoto, H. Tanaka, S. Hasegawa, and H. Asahi: "Photoemission and x-ray absorption studies of the electronic structure of GaN-based diluted magnetic semiconductors", physica status solidi (b) 243, 1696 (2006)
Yuan-Hua Lin, Rongjuan Zhao, Ce-Wen Nan, Minghao Ying, M. Kobayashi,
Y. Ooki, and A. Fujimori: "Enhancement of ferromagnetic properties of NiO:Fe thin films by Li doping", Appl. Phys. Lett. 89, 202501 (2006)
Y. Ishida, J. I. Hwang, M. Kobayashi, Y. Takeda, K. Mamiya, J. Okamoto,
S.-I. Fujimori, T. Okane, K. Terai, Y. Saitoh, Y. Muramatsu, A. Fujimori,
A. Tanaka, H. Saeki, T. Kawai, and H. Tabata: "Soft x-ray magnetic circular dichroism study of weakly ferromagnetic Zn1-xVxO thin film", Appl. Phys. Lett. 90, 022510 (2007) cond-mat/0609173
D. D. Sarma, Sugata Ray, K. Tanaka, M. Kobayashi, A. Fujimori, P. Sanyal,
H. R. Krishnamurthy, and C. Dasgupta: "Intergranular Magnetoresistance in Sr2FeMoO6 from a Magnetic Tunnel Barrier Mechanism across Grain Boundaries", Phys. Rev. Lett. 98, 157205 (2007)
J. I. Hwang, Y. Osafune, M. Kobayashi, K. Ebata, Y. Ooki, Y. Ishida,
A. Fujimori, Y. Takeda, T. Okane, Y. Saitoh, K. Kobayashi, and A. Tanaka: "Depth profile high-energy spectroscopic study of Mn-doped GaN prepared by thermal diffusion", J. Appl. Phys. 101, 103709 (2007) cond-mat/0703429
Y.-H. Lin, K. Terai, H. Wadati, M. Kobayashi, M. Takizawa, J. I. Hwang,
A. Fujimori, C.-W. Nan, J.-F. Li, S.-I. Fujimori, T. Okane, Y. Saitoh, and
K. Kobayashi: "Phase change observed in ultrathin Ba0.5Sr0.5TiO3 films by in situ resonant photoemission spectroscopy", Appl. Phys. Lett. 90, 222909 (2007)
M. Kobayashi, K. Tanaka, A. Fujimori, Sugata Ray, and D. D. Sarma: "Critical Test for Altshuler-Aronov Theory: Evolution of the Density of States Singularity in Double Perovskite Sr2FeMoO6 with Controlled Disorder", Phys. Rev. Lett. 98, 246401 (2007) cond-mat/0704.1688
J. I. Hwang, M. Kobayashi, G. S. Song, A. Fujimori, A. Tanaka, Z. S. Yang,
H. J. Lin, D. J. Huang, C. T. Chen, H. C. Jeon, and T. W. Kang: "X-ray magnetic circular dichroism characterization of GaN/Ga1-xMnxN digital ferromagnetic heterostructure", Appl. Phys. Lett. 91, 072507 (2007) cond-mat/0703477
M. Kobayashi, Y. Ooki, M. Takizawa, G. S. Song, A. Fujimori, Y. Takeda,
K. Terai, T. Okane, S.-I. Fujimori, Y. Saitoh, H. Yamagami, M. Seki, T. Kawai,
and H. Tabata: "Photoemission and x-ray absorption studies of valence states in (Ni,Zn,Fe,Ti)3O4 thin films exhibiting photo-induced magnetization", Appl. Phys. Lett. 92, 082502 (2008) arXiv:0710.2377
Y. Ishida, M. Kobayashi, J.I. Hwang, Y. Takeda, S-I. Fujimori, T. Okane,
K. Terai, Y. Saitoh, Y. Muramatsu, A. Fujimori, A. Tanaka, H. Saito, and K. Ando: "X-ray magnetic circular dichroism and photoemission study of the diluted ferromagnetic semiconductor Zn1-xCrxTe", Appl. Phys. Express 1, 041301 (2008)
K. Terai, K. Yoshii, Y. Takeda, S.-I. Fujimori, Y. Saitoh, K. Ohwada, T. Inami,
T. Okane, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, K. Kobayashi, M. Kobayashi, and A. Fujimori: "X-ray magnetic circular dichroism and photoemission studies of ferromagnetism in
CaMn1-xRuxO3 thin films", Phys. Rev. B 77, 115128 (2008)
M. Kobayashi, Y. Ishida, J. I. Hwang, G. S. Song, A. Fujimori, C.-S. Yang,
L. Lee, H.-J. Lin, D. J. Huang, C. T. Chen, Y. Takeda, K. Terai, S.-I. Fujimori,
T. Okane, Y. Saitoh, K. Kobayashi, H. Yamagami, A. Tanaka, H. Saito,
and K. Ando: "Local electronic structure of Cr in the II-VI diluted ferromagnetic semiconductor
Zn1-xCrxTe", New J. Phys. 10, 055011 (2008) arXiv:0804.3272
Y. Osafune, G. S. Song, J. I. Hwang, Y. Ishida, M. Kobayashi, K. Ebata,
Y. Ooki, A. Fujimori, J. Okabayashi, K. Kanai, K. Kubo, and M. Oshima: "Depth profile photoemission study of thermally diffused Mn/GaAs (001) interface", J. Appl. Phys. 103, 103717 (2008)
Y. Takeda, M. Kobayashi, T. Okane, T. Ohkochi, J. Okamoto, Y. Saitoh,
K. Kobayashi, H. Yamagami, A. Fujimori, A. Tanaka, J. Okabayashi, M. Oshima,
S. Ohya, P. N. Hai, and M. Tanaka: "Nature of magnetic coupling between Mn ions in as-grown Ga1-xMnxAs studied by
x-ray magnetic circular dichroism", Phys. Rev. Lett. 100, 247202 (2008) arXiv:0801.1155
G. S. Song, M. Kobayashi, J. I. Hwang, T. Kataoka, M. Takizawa, A. Fujimori,
T. Ohkouchi, Y. Takeda, T. Okane, Y. Saitoh, H. Yamagami, H.-H. Chang, L. Lee,
H.-J. Lin, D. J. Huang, C. T. Chen, S. Kimura, M. Funakoshi, S. Hasegawa, and
H. Asahi: "Electronic structure of Ga1-xCrxN and Si-doping effects studied by photoemission and x-ray absorption spectroscopy", Phys. Rev. B 78, 033304 (2008) arXiv:0805.3299
Gyong Sok Song, Takashi Kataoka, Masaki Kobayashi, Jong Il Hwang,
Masaru Takizawa, Atsushi Fujimori, Takuo Ohkochi, Yukiharu Takeda,
Tetsuo Okane, Yuji Saitoh, Hiroshi Yamagami, Fumiyoshi Takano,
and Hiro Akinaga: "Soft X-ray Absorption and Photoemission Studies of Ferromagnetic Mn-Implanted 3C-SiC", Jpn. J. Appl. Phys. 47, 7113 (2008) arXiv:0803.2185
M. Kobayashi, J. I. Hwang, G. S. Song, Y. Ooki, M. Takizawa, A. Fujimori,
Y. Takeda, S.-I. Fujimori, K. Terai, T. Okane, Y. Saitoh, H. Yamagami, Y.-H. Lin,
and C.-W. Nan: "Systematic changes of the electronic structure of the diluted ferromagnetic oxide
Li-doped Ni1-xFexO with hole doping", Phys. Rev. B 78, 155322 (2008) arXiv:0711.4658
M. Kobayashi, Y. Ishida, J. I. Hwang, G. S. Song, M. Takizawa, A. Fujimori,
Y. Takeda, T. Ohkochi, T. Okane, Y. Saitoh, H. Yamagami, Amita Gupta,
H. T. Cao, and K. V. Rao: "Hybridization between the conduction band and 3d orbitals in the oxide-based diluted magnetic semiconductor In2-xVxO3", Phys. Rev. B 79, 205203 (2009) arXiv:0801.4244
M. Kobayashi, S. Hidai, H. Niwa, Y. Harada, M. Oshima, Y. Horikawa,
T. Tokushima, S. Shin, Y. Nakamori, and T. Aoki:
"Co oxidation accompanied with degradation of Pt-Co alloy cathode catalysts in polymer electrolyte fuel cells"
Phys. Chem. Chem. Phys. 11, 8226 (2009)
T. Kataoka, M. Kobayashi, Y. Sakamoto, G. S. Song, A. Fujimori, F.-H. Chang,
H.-J. Lin, D. J. Huang, C. T. Chen, T. Ohkochi, Y. Takeda, T. Okane, Y. Saitoh, H. Yamagami,
A. Tanaka, S. K. Mandai, T. K. Nath, D. Karmakar, and I. Dasgupta: "Electronic structure and magnetism of the diluted magnetic semiconductor Fe-doped ZnO nanoparticles", J. Appl. Phys. 107, 033718 (2010).
M. Kobayashi, Y. Ishida, J. I. Hwang, Y. Osafune, A. Fujimori, Y. Takeda,
T. Okane, Y. Saitoh, K. Kobayashi, H. Saeki, T. Kawai, and H. Tabata: "Antiferromagnetic interaction between paramagnetic Co ions in the diluted magnetic semiconductor Zn1-xCoxO", Phys. Rev. B 81, 075204 (2010). PRB Kaleidoscope arXiv:1001.0712