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Journal Articles

Spin-flop phase in a honeycomb antiferromagnet Mn$$_{0.84}$$Mg$$_{0.16}$$TiO$$_{3}$$

Shamoto, Shinichi; Yamauchi, Hiroki; Ikeuchi, Kazuhiko*; Lee, M. K.*; Chang, L.-J.*; Garlea, V. O.*; Hwang, I. Y.*; Lee, K. H.*; Chung, J.-H.*

Journal of the Physical Society of Japan, 90(9), p.093703_1 - 093703_4, 2021/09

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Spin wave excitations in honeycomb antiferromagnet MnTiO$$_{3}$$

Hwang, I. Y.*; Lee, K. H.*; Chung, J.-H.*; Ikeuchi, Kazuhiko*; Garlea, V. O.*; Yamauchi, Hiroki; Akatsu, Mitsuhiro*; Shamoto, Shinichi

Journal of the Physical Society of Japan, 90(6), p.064708_1 - 064708_6, 2021/06

 Times Cited Count:1 Percentile:72.06(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Antiferromagnetic interaction between paramagnetic Co ions in the diluted magnetic semiconductor Zn$$_{1-x}$$Co$$_x$$O

Kobayashi, Masaki*; Ishida, Yukiaki*; Hwang, J. I.*; Osafune, Yoshitaka*; Fujimori, Atsushi*; Takeda, Yukiharu; Okane, Tetsuo; Saito, Yuji; Kobayashi, Keisuke*; Saeki, Hiromasa*; et al.

Physical Review B, 81(7), p.075204_1 - 075204_7, 2010/02

AA2009-0975.pdf:0.87MB

 Times Cited Count:19 Percentile:64.83(Materials Science, Multidisciplinary)

Journal Articles

Hybridization between the conduction band and 3$$d$$ orbitals in the oxide-based diluted magnetic semiconductor In$$_{2-x}$$V$$_x$$O$$_3$$

Kobayashi, Masaki*; Ishida, Yukiaki*; Hwang, J. I.*; Song, G. S.*; Takizawa, Masaru*; Fujimori, Atsushi; Takeda, Yukiharu; Okochi, Takuo*; Okane, Tetsuo; Saito, Yuji; et al.

Physical Review B, 79(20), p.205203_1 - 205203_5, 2009/05

 Times Cited Count:7 Percentile:35.36(Materials Science, Multidisciplinary)

Journal Articles

Systematic changes of the electronic structure of the diluted ferromagnetic oxide Li-doped Ni$$_{1-x}$$Fe$$_x$$O with hole doping

Kobayashi, Masaki*; Hwang, J. I.*; Song, G.*; Oki, Yasuhiro*; Takizawa, Masaru*; Fujimori, Atsushi; Takeda, Yukiharu; Fujimori, Shinichi; Terai, Kota*; Okane, Tetsuo; et al.

Physical Review B, 78(15), p.155322_1 - 155322_4, 2008/10

 Times Cited Count:5 Percentile:27.8(Materials Science, Multidisciplinary)

Journal Articles

Soft X-ray absorption and photoemission studies of ferromagnetic Mn-implanted 3$$C$$-SiC

Song, G.*; Kobayashi, Masaki*; Hwang, J. I.*; Kataoka, Takashi*; Takizawa, Masaru*; Fujimori, Atsushi; Okochi, Takuo; Takeda, Yukiharu; Okane, Tetsuo; Saito, Yuji; et al.

Japanese Journal of Applied Physics, 47(9), p.7113 - 7116, 2008/09

 Times Cited Count:3 Percentile:15.39(Physics, Applied)

Journal Articles

Electronic structure of Ga$$_{1-x}$$Cr$$_{x}$$N and Si-doping effects studied by photoemission and X-ray absorption spectroscopy

Song, G.*; Kobayashi, Masaki*; Hwang, J. I.*; Kataoka, Takashi*; Takizawa, Masaru*; Fujimori, Atsushi; Okochi, Takuo; Takeda, Yukiharu; Okane, Tetsuo; Saito, Yuji; et al.

Physical Review B, 78(3), p.033304_1 - 033304_4, 2008/07

 Times Cited Count:8 Percentile:39.26(Materials Science, Multidisciplinary)

Journal Articles

Local electronic structure of Cr in the II-VI diluted ferromagnetic semiconductor Zn$$_{1-x}$$Cr$$_x$$Te

Kobayashi, Masaki*; Ishida, Yukiaki*; Hwang, J. I.*; Song, G. S.*; Fujimori, Atsushi; Yang, C. S.*; Lee, L.*; Lin, H.-J.*; Huang, D.-J.*; Chen, C. T.*; et al.

New Journal of Physics (Internet), 10, p.055011_1 - 055011_15, 2008/05

 Times Cited Count:13 Percentile:62.96(Physics, Multidisciplinary)

Journal Articles

Phase change observed in ultrathin Ba$$_{0.5}$$Sr$$_{0.5}$$TiO$$_3$$ films by in situ resonant photoemission spectroscopy

Lin, Y.-H.*; Terai, Kota*; Wadachi, Hiroki*; Kobayashi, Masaki*; Takizawa, Masaru*; Hwang, J. I.*; Fujimori, Atsushi; Nan, C.-W.*; Li, J.-F.*; Fujimori, Shinichi; et al.

Applied Physics Letters, 90(22), p.222909_1 - 222909_3, 2007/05

AA2007-0754.pdf:0.58MB

 Times Cited Count:6 Percentile:28.01(Physics, Applied)

Epitaxial Ba$$_{0.5}$$Sr$$_{0.5}$$TiO$$_3$$ thin films were prepared on Nb-doped SrTiO$$_3$$ (100) substrates by the pulsed laser deposition technique and were studied by measuring the Ti 2p $$rightarrow$$ 3d resonant photoemission spectra in the valence-band region, both at room temperature and low temperature. The results demonstrated an abrupt variation in the spectral structures between 2.8 nm ($$sim$$7 ML) and 2.0 nm ($$sim$$5 ML) Ba$$_{0.5}$$Sr$$_{0.5}$$TiO$$_3$$ films, suggesting that there exists a critical thickness for phase change in the range of 2.0-2.8 nm.

Journal Articles

Soft X-ray magnetic circular dichroism study of weakly ferromagnetic Zn$$_{1-x}$$V$$_{x}$$O thin film

Ishida, Yukiaki*; Hwang, J. I.*; Kobayashi, Masaki*; Takeda, Yukiharu; Mamiya, Kazutoshi*; Okamoto, Jun*; Fujimori, Shinichi; Okane, Tetsuo; Terai, Kota*; Saito, Yuji; et al.

Applied Physics Letters, 90(2), p.022510_1 - 022510_3, 2007/01

 Times Cited Count:23 Percentile:66.48(Physics, Applied)

no abstracts in English

Journal Articles

Characterization of magnetic components in the diluted magnetic semiconductor Zn$$_{1-x}$$Co$$_x$$O by X-ray magnetic circular dichroism

Kobayashi, Masaki*; Ishida, Yukiaki*; Hwang, J. I.*; Mizokawa, Takashi*; Fujimori, Atsushi*; Mamiya, Kazutoshi*; Okamoto, Jun*; Takeda, Yukiharu; Okane, Tetsuo; Saito, Yuji; et al.

Physical Review B, 72(20), p.201201_1 - 201201_4, 2005/11

 Times Cited Count:136 Percentile:96.39(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

High-energy spectroscopic study of the III-V nitride-based diluted magnetic semiconductor Ga$$_{1-x}$$Mn$$_{x}$$N

Hwang, J. I.*; Ishida, Yukiaki*; Kobayashi, Masaki*; Hirata, Gen*; Takubo, Ko*; Mizokawa, Takashi*; Fujimori, Atsushi; Okamoto, Jun; Mamiya, Kazutoshi*; Saito, Yuji; et al.

Physical Review B, 72(8), p.085216_1 - 085216_6, 2005/08

A2004-0178.pdf:0.19MB

 Times Cited Count:63 Percentile:88.71(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Bulk-sensitive photoemission spectroscopy of $$A_{2}$$FeMoO$$_{6}$$ double perovskites ($$A$$=Sr, Ba)

Kang, J.-S.*; Kim, J. H.*; Sekiyama, Akira*; Kasai, Shuichi*; Suga, Shigemasa*; Han, S. W.*; Kim, K. H.*; Muro, Takayuki*; Saito, Yuji; Hwang, C.*; et al.

Physical Review B, 66(11), p.113105_1 - 113105_4, 2002/09

 Times Cited Count:63 Percentile:90.51(Materials Science, Multidisciplinary)

The electronic structures of Sr$$_{2}$$FeMoO$$_{6}$$ (SFMO) and Ba$$_{2}$$FeMoO$$_{6}$$ (BFMO) double perovskites have been investigated using Fe 2p-3d resonant photoemission spectroscopy (PES) and the Cooper minimum in the Mo 4d photoionization cross section. The states close to the Fermi level are found to have a strongly mixed Mo–Fe t$$_{2g}$$ character, indicating that the Fe valence is far from pure 3+. The Fe 2p$$_{3/2}$$ x-ray absorption spectroscopy spectra reveal the mixed-valent Fe $$^{3+}$$–Fe$$^{2+}$$ configurations, and a larger Fe$$^{2+}$$ component for BFMO than for SFMO, suggesting an operative double exchange interaction. The valence-band PES spectra reveal good agreement with the local-spin-density-approximation (LSDA+U) calculation.

13 (Records 1-13 displayed on this page)
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