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Journal Articles

Orbital excitations in LaMnO$$_3$$ studied by resonant inelastic X-ray scattering

Inami, Toshiya; Fukuda, Tatsuo; Mizuki, Junichiro; Ishihara, Sumio*; Kondo, Hiroshi*; Nakao, Hironori*; Matsumura, Takeshi*; Hirota, Kazuma*; Murakami, Yoichi*; Maekawa, Sadamichi*; et al.

Physical Review B, 67(4), p.045108_1 - 045108_6, 2003/01

 Times Cited Count:56 Percentile:88.61(Materials Science, Multidisciplinary)

We report resonant inelastic x-ray scattering experiments of the orbitally ordered manganite LaMnO$$_3$$. When incident photon energy is tuned near the Mn $$K$$ absorption edge, the spectra reveal three features at 2.5 eV, 8 eV and 11 eV. The 8 eV and 11 eV peaks are ascribed to transitions from the O 2$$p$$ bands to the empty Mn 3$$d$$ and $$4s$$/$$4p$$ bands, respectively. On the other hand, the 2.5 eV peak is considered an orbital excitation across the Mott gap, ${it i.e.}$ an electron excitation from the effective lower Hubbard band with the $$d_{3x^2-r^2}$$ and $$d_{3y^2-r^2}$$ orbital characters to the upper Hubbard band with the $$d_{y^2-z^2}$$ and $$d_{z^2-x^2}$$ ones. The weak dispersion and characteristic azimuthal angle dependence of this excitation are well reproduced by a theory which includes orbital degeneracy and strong electron correlation.

Journal Articles

Actinide nitrides and nitride-halides in high-temperature systems

Ogawa, Toru; Kobayashi, Fumiaki; Sato, Tadashi; R.G.Haire*

Journal of Alloys and Compounds, 271-273, p.347 - 354, 1998/00

 Times Cited Count:16 Percentile:68.56(Chemistry, Physical)

no abstracts in English

Journal Articles

Thermodynamics of carbothermic synthesis of actinide mononitrides

Ogawa, Toru; Shirasu, Yoshiro; Minato, Kazuo; Serizawa, Hiroyuki

Journal of Nuclear Materials, 247, p.151 - 157, 1997/00

 Times Cited Count:15 Percentile:75.08(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Adsorption spectrum of trapped electrons in rhamnose single crystals X-irradiated at 4K

Fujimura, Takashi; L.Kevan*; A.S.W.Li*

Journal of Chemical Physics, 76(11), p.5647 - 5648, 1982/00

 Times Cited Count:6 Percentile:67.53(Chemistry, Physical)

no abstracts in English

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