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Superconductivity in a Two-Orbital Hubbard Model with Electron and Hole Fermi Pockets: Application in Iron Oxypnictide Superconductors
Kazuhiro Sano, Yoshiaki Ono
We investigate the electronic states of a one-dimensional two-orbital Hubbard model with band splitting by the exact diagonalization method. The Luttinger liquid parameter is…
Two types of s-wave pairing due to magnetic and orbital fluctuations in the two-dimensional 16-band d-p model for iron-based superconductors
Yuki Yanagi, Youichi Yamakawa, Yoshiaki Ōno
We study superconductivity in the two-dimensional 16-band d-p model extracted from a tight-binding fit to the band structure of LaFeAsO, using the random phase approximation. When…
Stellar Populations of Lyman Alpha Emitters at z = 3 - 4 Based on Deep Large Area Surveys in the Subaru-SXDS/UKIDSS-UDS Field
Yoshiaki Ono, Masami Ouchi, Kazuhiro Shimasaku +7
We investigate the stellar populations of Lyman alpha emitters (LAEs) at z=3.1 and 3.7 in 0.65 deg^2 of the Subaru/XMM-Newton Deep Field, based on rest-frame UV-to-optical photomet…
Large Area Survey for z=7 Galaxies in SDF and GOODS-N: Implications for Galaxy Formation and Cosmic Reionization
Masami Ouchi, Bahram Mobasher, Kazuhiro Shimasaku +10
We present results of our large-area survey for z'-band dropout galaxies at z=7 in a 1568 arcmin^2 sky area covering the SDF and GOODS-N fields. Combining our ultra-deep Subaru/Sup…
Effects of ferromagnetic fluctuations on the electric and thermal transport properties in NaxCoO2
Y. Yanagi, Y. Ōno
We investigate the electronic states and the transport properties of the CoO2 plane in NaxCoO2 on the basis of the two-dimensional triangular lattice 11-band d-p model by using the…
Effect of the spin-orbit interaction and the electron phonon coupling on the electronic state in a silicon vacancy
Takemi Yamada, Youichi Yamakawa, Yoshiaki Ōno
The electronic state around a single vacancy in silicon crystal is investigated by using the Green's function approach. The triply degenerate charge states are found to be widely e…