H. Namatame

Enhanced superconducting gaps in the tri-layer high-$T_c$ cuprate Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+\delta}$ (2009)

Ideta, S., Takashima, K., Hashimoto, M., Yoshida, T., Fujimori, A., Anzai, H., ...

We have investigated the optimally doped tri-layer cuprate Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+\delta}$ (Bi2223) by angle-resolved photoemission spectroscopy, and observed energy bands and Fermi surfaces...

The orbital characters of bands in iron-based superconductor BaFe1.85Co0.15As2 (2009)

Zhang, Y., Zhou, B., Chen, F., Wei, J., Xu, M., Yang, L. X., ...

Multiple 3d orbitals contribute to the low energy electronic structure in the newly discovered iron-based superconductors. The specific orbital characters of the multi-bands are crucial in...

Origin of the surface-state band-splitting in ultrathin Bi films: from a Rashba effect to a parity effect (2008)

Hirahara, T., Miyamoto, K., Kimura, A., Niinuma, Y., Bihlmayer, G., Chulkov, Eugene V., ...

12 pages, 4 figures.

Correlation effects of exchange splitting and coexistence of spin-density-wave and superconductivity in single crystalline Sr1-xKxFe2As2 (2008)

Zhang, Y., Wei, J., Ou, H. W., Zhao, J. F., Zhou, B., Chen, F., ...

The nature of spin-density wave and its relation with superconductivity are crucial issues in the newly discovered Fe-based high temperature superconductors. Particularly it is unclear whether the...

An Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates (2008)

Iwasawa, H., Douglas, J. F., Sato, K., Masui, T., Yoshida, Y., Sun, Z., ...

Angle-resolved photoemission spectroscopy with low-energy tunable photons along the nodal direction of oxygen isotope substituted Bi2Sr2CaCu2O8+delta reveals a distinct oxygen isotope shift near the...

Novel electronic structure induced by a highly strained oxide interface with incommensurate crystal fields (2008)

Ou, H. W., Zhao, J. F., Zhang, Y., Xie, B. P., Shen, D. W., Zhu, Y., ...

The misfit oxide, Bi$_{2}$Ba$_{1.3}$K$_{0.6}$Co$_{2.1}$O$_{y}$, made of alternating rocksalt-structured [BiO/BaO] layers and hexagonal CoO$_{2}$ layers, was studied by angle-resolved photoemission...

Primary role of the barely occupied states in the charge density wave formation of NbSe2 (2008)

Shen, D. W., Zhang, Y., Yang, L. X., Wei, J., Ou, H. W., Dong, J. K., ...

NbSe2 is a prototypical charge-density-wave (CDW) material, whose mechanism remains mysterious so far. With angle resolved photoemission spectroscopy, we mapped out the CDW gap and recovered the...

Doping-insensitive density-of-states suppression in polycrystalline iron-based superconductor SmO$_{1-x}$F$_{x}$FeAs (2008)

Ou, H. W., Zhang, Y., Zhao, J. F., Wei, J., Shen, D. W., Zhou, B., ...

We investigated the temperature dependence of the density-of-states in the iron-based superconductor SmO_1-xF_xFeAs (x=0, 0.12, 0.15, 0.2) with high resolution angle-integrated photoemission...

Superconducting coherence peak in the electronic excitations of a single layer cuprate superconductor $Bi_2 Sr_{1.6} La_{0.4} Cu O_{6+\delta}$ (2008)

Wei, J., Zhang, Y., Ou, H. W., Xie, B. P., Shen, D. W., Zhao, J. F., ...

Angle resolved photoemission spectroscopy study is reported on a high quality optimally doped Bi2Sr1.6La0.4CuO6+delta high Tc superconductor. In the antinodal region with maximal d-wave gap, the...

Evolution of the Electronic Structure of 1T-CuxTiSe2 (2006)

Zhao, J. F., Ou, H. W., Wu, G., Xie, B. P., Zhang, Y., Shen, D. W., ...

The electronic structure of a new charge-density-wave/ superconductor system, 1T-CuxTiSe2, has been studied by photoemission spectroscopy. A correlated semiconductor band structure is revealed for...

High-energy scale revival and giant kink in the dispersion of a cuprate superconductor (2006)

Xie, B. P., Yang, K., Shen, D. W., Zhao, J. F., Ou, H. W., Wei, J., ...

In the present photoemission study of a cuprate superconductor Bi1.74Pb0.38Sr1.88CuO6+delta, we discovered a large scale dispersion of the lowest band, which unexpectedly follows the band structure...

Unmasking the nodal quasiparticle dynamics in cuprate superconductors using low-energy photoemission (2006)

Yamasaki, T., Yamazaki, K., Ino, A., Arita, M., Namatame, H., Taniguchi, M., ...

Nodal quasiparticles of Bi2Sr2CaCu2O8 have been studied by angle-resolved photoemission spectroscopy with high momentum and energy resolution. Low-energy tunable photons have enabled us to resolve a...

Normal state electronic structure in the heavily overdoped regime of Bi1.74Pb0.38Sr1.88CuO6+delta single-layer cuprate superconductors (2006)

Yang, K., Xie, B. P., Shen, D. W., Zhao, J. F., Ou, H. W., Wei, J., ...

We explore the electronic structure in the heavily overdoped regime of the single layer cuprate superconductor Bi1.74Pb0.38Sr1.88CuO6+delta. We found that the nodal quasiparticle behavior is...

Electronic Structure of Charge- and Spin-controlled Sr_{1-(x+y)}La_{x+y}Ti_{1-x}Cr_{x}O_{3} (2006)

Iwasawa, H., Yamakawa, K., Saitoh, T., Inaba, J., Katsufuji, T., Higashiguchi, M., ...

We present the electronic structure of Sr_{1-(x+y)}La_{x+y}Ti_{1-x}Cr_{x}O_{3} investigated by high-resolution photoemission spectroscopy. In the vicinity of Fermi level, it was found that the...

Orbital selectivity of the kink in the dispersion of Sr2RuO4 (2005)

Iwasawa, H., Aiura, Y., Saitoh, T., Hase, I., Ikeda, S. I., Yoshida, Y., ...

We present detailed energy dispersions near the Fermi level on the monolayer perovskite ruthenate Sr2RuO4, determined by high-resolution angle-resolved photoemission spectroscopy. An orbital...

Bulk and surface-sensitive high-resolution photoemission study of Mott-Hubbard systems SrVO$_3$ and CaVO$_3$ (2005)

Eguchi, R., Kiss, T., Tsuda, S., Shimojima, T., Mizokami, T., Yokoya, T., ...

We study the electronic structure of Mott-Hubbard systems SrVO$_{3}$ and CaVO$_3$ with bulk and surface-sensitive high-resolution photoemission spectroscopy (PES), using a VUV laser, synchrotron...

Nature of Well-Screened State in Hard X-ray Mn 2$p$ Core-Level Photoemission of La$_{1-x}$Sr$_x$MnO$_3$ Films (2004)

Horiba, K., Taguchi, M., Chainani, A., Takata, Y., Ikenaga, E., Namatame, H., ...

Using hard x-ray (HX ; $h\nu$ = 5.95 keV) synchrotron photoemission spectroscopy (PES), we study the intrinsic electronic structure of La$_{1-x}$Sr$_x$MnO$_3$ (LSMO) thin films. Comparison of Mn 2$p$...

Bulk Electronic structure of Na$_{0.35}$CoO$_{2}$.1.3H$_{2}$O (2003)

Chainani, A., Yokoya, T., Takata, Y., Tamasaku, K., Taguchi, M., Shimojima, T., ...

High-energy (h$\nu$ = 5.95 keV) synchrotron Photoemission spectroscopy (PES) is used to study bulk electronic structure of Na$_{0.35}$CoO$_{2}$.1.3H$_{2}$O, the layered superconductor. In contrast to...