Zobrazeno 1 - 10
of 512
pro vyhledávání: '"Senba, Y."'
Autor:
Taguchi, M., Chainani, A., Ueda, S., Matsunami, M., Ishida, Y., Eguchi, R., Tsuda, S., Takata, Y., Yabashi, M., Tamasaku, K., Nishino, Y., Ishikawa, T., Daimon, H., Todo, S., Tanaka, H., Oura, M., Senba, Y., Ohashi, H., Shin, S.
Publikováno v:
Phys. Rev. Lett. 115, 256405 (2015)
We have studied the electronic structure of bulk single crystals and epitaxial films of magnetite Fe$_3$O$_4$. Fe $2p$ core-level spectra show clear differences between hard x-ray (HAX-) and soft x-ray (SX-) photoemission spectroscopy (PES), indicati
Externí odkaz:
http://arxiv.org/abs/1504.05316
Autor:
Kobayashi, M., Niwa, H., Takeda, Y., Fujimori, A., Senba, Y., Ohashi, H., Tanaka, A., Ohya, S., Hai, P. N., Tanaka, M., Harada, Y., Oshima, M.
Publikováno v:
Phys. Rev. Lett. 112, 107203 (2014)
The electronic structure of doped Mn in (Ga,Mn)As is studied by resonant inelastic X-ray scattering (RIXS). From configuration-interaction cluster-model calculations, the line shapes of the Mn $L_3$ RIXS spectra can be explained by $d$-$d$ excitation
Externí odkaz:
http://arxiv.org/abs/1306.1474
Autor:
Ma, R., Motomura, K., Ishikawa, K. L., Mondal, S., Fukuzawa, H., Yamada, A., Ueda, K., Nagaya, K., Yase, S., Mizoguchi, Y., Yao, M., Rouzée, A., Hundermark, A., Vrakking, M. J. J., Johnsson, P., Nagasono, M., Tono, K., Togashi, T., Senba, Y., Ohashi, H., Yabashi, M., Ishikawa, T.
Phase-shift differences and amplitude ratios of the outgoing $s$ and $d$ continuum wave packets generated by two-photon ionization of helium atoms are determined from the photoelectron angular distributions obtained using velocity map imaging. Helium
Externí odkaz:
http://arxiv.org/abs/1204.4812
Autor:
Bhobe, P. A., Chainani, A., Taguchi, M., Eguchi, R., Matsunami, M., Ohtsuki, T., Ishizaka, K., Okawa, M., Oura, M., Senba, Y., Ohashi, H., Isobe, M., Ueda, Y., Shin, S.
We report on the electronic structure of the perovskite oxide CaCrO3 using valence-band, core-level, and Cr 2p - 3d resonant photoemission spectroscopy (PES). Despite its antiferromagnetic order, a clear Fermi edge characteristic of a metal with domi
Externí odkaz:
http://arxiv.org/abs/1011.2353
Autor:
Ohtsuki, T., Chainani, A., Eguchi, R., Matsunami, M., Takata, Y., Taguchi, M., Nishino, Y., Tamasaku, K., Yabashi, M., Ishikawa, T., Oura, M., Senba, Y., Ohashi, H., Shin, S.
We study the surface and bulk electronic structure of the room-temperature ferromagnet Co:TiO2 anatase films using soft and hard x-ray photoemission spectroscopy with probe sensitivities of ~1 nm and ~10 nm, respectively. We obtain direct evidence of
Externí odkaz:
http://arxiv.org/abs/1008.1908
Autor:
Bhobe, P. A., Chainani, A., Taguchi, M., Takeuchi, T., Eguchi, R., Matsunami, M., Ishizaka, K., Takata, Y., Oura, M., Senba, Y., Ohashi, H., Nishino, Y., Yabashi, M., Tamasaku, K., Ishikawa, T., Takenaka, K., Takagi, H., Shin, S.
Publikováno v:
Phys. Rev. Lett 104, 236404 (2010)
We investigate the electronic structure of Chromium Nitride (CrN) across the first-order magneto-structural transition at T_N ~ 286 K. Resonant photoemission spectroscopy shows a gap in the 3d partial density of states at the Fermi level and an On-si
Externí odkaz:
http://arxiv.org/abs/1004.0042
Autor:
Miyawaki, J., Chainani, A., Takata, Y., Mulazzi, M., Oura, M., Senba, Y., Ohashi, H., Shin, S.
Epitaxial ultrathin Fe films on fcc Cu(001) exhibit a spin spiral (SS), in contrast to the ferromagnetism of bulk bcc Fe. We study the in-plane and out-of-plane Fermi surfaces (FSs) of the SS in 8 monolayer Fe/Cu(001) films using energy dependent sof
Externí odkaz:
http://arxiv.org/abs/0911.2300
Autor:
Ishida, Y., Baba, T., Eguchi, R., Matsunami, M., Taguchi, M., Chainani, A., Senba, Y., Ohashi, H., Okamoto, Y., Takagi, H., Shin, S.
Publikováno v:
Phys. Rev. B 80, 081103(R) (2009)
Soft-x-ray photoemission and absorption spectroscopies are employed to investigate the electronic structures of Sr_{1-x}Rh_{2}O_{4}. Similarly to the layered cobaltates such as Na_{1-x}CoO_{2}, a valence-band satellite feature (VBS) occurs at higher
Externí odkaz:
http://arxiv.org/abs/0907.5455
Autor:
Eguchi, R., Chainani, A., Taguchi, M., Matsunami, M., Ishida, Y., Horiba, K., Senba, Y., Ohashi, H., Shin, S.
Publikováno v:
Phys. Rev. B 79, 115122 (2009).
We report the three-dimensional (3-D) momentum-resolved soft x-ray photoemission spectroscopy of the Fermi liquid LaNiO$_3$. The out-of-plane and in-plane cuts of the 3-D electron- and hole-Fermi surfaces (FSs) are observed by energy- and angle- depe
Externí odkaz:
http://arxiv.org/abs/0903.1487
Autor:
Taguchi, M., Chainani, A., Matsunami, M., Eguchi, R., Takata, Y., Yabashi, M., Tamasaku, K., Nishino, Y., Ishikawa, T., Tsuda, S., Watanabe, S., Chen, C. -T., Senba, Y., Ohashi, H., Fujiwara, K., Nakamura, Y., Takagi, H., Shin, S.
Publikováno v:
Phys. Rev. Lett. 104, 106401 (2010)
The Magneli phase Ti4O7 exhibits two sharp jumps in resistivity with coupled structural transitions as a function of temperature at Tc1=142 K and Tc2=154 K. We have studied electronic structure changes across the two transitions using 7 eV laser, sof
Externí odkaz:
http://arxiv.org/abs/0902.3701