Search Results - "S. Hirashima, Dai"

Nonmagnetic-defect-induced magnetism in graphene by KUMAZAKI, Hideki, HIRASHIMA, Dai S

“…It is shown that a strong impurity potential induces short-range antiferromagnetic (ferrimagnetic) order around itself in a Hubbard model on a half-filled…”
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Validity of Fermi-Liquid Description of Low-Energy Magnetic Excitation in Electron-Doped Cuprate Superconductors by Mutou, Tetsuya, Hirashima, Dai S

“…The spin-fluctuation spectrum of electron-doped cuprate superconductors is calculated using the single-band Hubbard model with realistic tight-binding…”
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Self-Consistent Second-Order Perturbation Theory of Correlation Effect in bcc Iron at Finite Temperatures by Nishishita, Muneyuki, Hirashima, Dai S, Pandey, Sudhakar

“…The self-consistent second-order perturbation theory is applied to a realistic multiband Hubbard model of bcc iron with realistic local Coulomb interaction…”
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Valence Instability and the Quantum Critical Point in an Extended Periodic Anderson Model : Analysis Based on the Dynamical Mean Field Theory by SAIGA, Yasuhiro, SUGIBAYASHI, Takashi, HIRASHIMA, Dai S

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Local Magnetic Moment Formation on Edges of Graphene by KUMAZAKI, Hideki, HIRASHIMA, Dai S

“…Local magnetic moment formation on edges of graphene is studied using the Hubbard model on a honeycomb lattice. The Coulomb interaction is treated with the…”
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Study of Intrinsic Spin and Orbital Hall Effects in Pt Based on a (6s, 6p, 5d) Tight-Binding Model by KONTANI, Hiroshi, NAITO, Masayuki, HIRASHIMA, Dai S, YAMADA, Kosaku, INOUE, Jun-Ichiro

“…We study the origin of the intrinsic spin Hall conductivity (SHC) and the d-orbital Hall conductivity (OHC) in Pt based on a multiorbital tight-binding model…”
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Spin-Polarized Transport on Zigzag Graphene Nanoribbon with a Single Defect by KUMAZAKI, Hideki, HIRASHIMA, Dai S

“…We calculate the electric conductance of a graphene nanoribbon (GNR) with and without a point defect. In the case of a zigzag GNR, magnetic moments are formed…”
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Effects of impurities in two-dimensional graphite by KUMAZAKI, Hideki, HIRASHIMA, Dai S

“…The impurity effects in a two-dimensional graphite sheet (graphene) are studied by self-consistent T-matrix approximation. Conductivity is found to be modestly…”
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Charge Fluctuations and Superconductivity in an Extended Periodic Anderson Model : A Weak Coupling Theory by SUGIBAYASHI, Takashi, SAIGA, Yasuhiro, HIRASHIMA, Dai S

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Possible vacancy-induced magnetism on a half-filled honeycomb lattice by KUMAZAKI, Hideki, HIRASHIMA, Dai S

“…The effects of impurities on the magnetism of electrons on a half-filled honeycomb lattice are studied using the self-consistent T-matrix approximation and an…”
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Dynamical spin susceptibilities in the superconducting phase of Sr2RuO4 by HIRASHIMA, Dai S

“…Dynamical spin susceptibilities in the chiral p-wave superconducting state, the most probable pairing state in Sr2RuO4, are calculated taking proper account of…”
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Spin wave excitations in the ferromagnetic phase of iron - : Study with a tight-binding model by NAITO, Masayuki, HIRASHIMA, Dai S

“…Spin wave excitations and the electron self-energy corrections in the ferromagnetic phase of iron are studied using the Naval Research Laboratory tight-binding…”
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Possible Collective Spin Excitation in the Spin-Triplet Superconducting State of Sr2RuO4 : Multi-Band Theory by NOMURA, Takuji, HIRASHIMA, Dai S, YAMADA, Kosaku

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Finite Temperature Properties of the Half-Metallic Material NiMnSb: A Self-Consistent T -Matrix Theory by Hirashima, Dai S.

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Angular dependence of the superconducting order parameter in electron-doped high-temperature superconductors by YOSHIMURA, Hiromasa, HIRASHIMA, Dai S

“…The superconducting order parameter in electron-doped high-temperature superconductors is calculated by fluctuation exchange approximation applied to a…”
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Completely Flat Band in a Crystal of Finite Thickness by Hirashima, Dai S.

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Superconducting State in Electron-doped High-Temperature Superconductors by Yoshimura, Hiromasa, S. Hirashima, Dai

“…Magnetic and superconducting properties of electron-doped high-temperature superconductors are studied with fluctuation exchange approximation applied to the…”
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Binding Energy of He Dimer in Nanotubes: Effect of Adsorption Potential by Yamashita, Kohei, Hirashima, Dai S

“…Dimer formation by He atoms confined in a narrow tube is studied and the effect of adsorption potential is clarified. The results are well explained in terms…”
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Three-electron systems in quantum nanostructures : Ground state transition from a spin-doublet state to a spin-quartet state by USUKURA, Junko, SAIGA, Yasuhiro, HIRASHIMA, Dai S

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Ground state of 3He atoms in narrow tube by OKAUE, Yoshitsugu, SAIGA, Yasuhiro, HIRASHIMA, Dai S

“…The ground state of 3He atoms confined in a narrow tube is studied by the variational Monte Carlo method. It is found that 3He atoms condense into a liquid…”
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