83 citations · 248 across the 7 of their papers we have counts for
7 papers
Nonlinear Optical Response of Spin Density Wave Insulators
S. A. Jafari, T. Tohyama, S. Maekawa
We calculate the third order nonlinear optical response in the Hubbard model within the spin density wave (SDW) mean field ansatz in which the gap is due to onsite Coulomb repulsio…
Exact diagonalization study of optical conductivity in two-dimensional Hubbard model
T. Tohyama, Y. Inoue, K. Tsutsui +1
The optical conductivity σ(ω) in the two-dimensional Hubbard model is examined by applying the exact diagonalization technique to small square clusters with periodic boundary condi…
Theoretical study of angle-resolved two-photon photoemission in two-dimensional insulating cuprates
H. Onodera, T. Tohyama, K. Tsutsui +1
We propose angle-resolved two-photon photoemission spectroscopy (AR-2PPES) as a technique to detect the location of the bottom of the upper Hubbard band (UHB) in two-dimensional in…
Nonequilibrium Kondo Effect in a Quantum Dot Coupled to Ferromagnetic Leads
Yasuhiro Utsumi, Jan Martinek, Gerd Schön +2
We study the Kondo effect in the electron transport through a quantum dot coupled to ferromagnetic leads, using a real-time diagrammatic technique which provides a systematic descr…
Momentum Dependence of Charge Excitations in the Electron-Doped Superconductor Nd1.85Ce0.15CuO4: a RIXS Study
K. Ishii, K. Tsutsui, Y. Endoh +9
We report a resonant inelastic x-ray scattering (RIXS) study of charge excitations in the electron-doped high-Tc superconductor Nd1.85Ce0.15CuO4. The intraband and interband excita…
Currents induced by domain wall motion in thin ferromagnetic wires
S. E. Barnes, S. Maekawa
Historically the role of eddy currents in the motion of Bloch walls has been extensively studied. In contrast the direct interaction of currents with such a moving wall has receive…