96 citations · 1.2k across the 67 of their papers we have counts for
67 papers
Phase diagram of the Kitaev-Heisenberg model using various finite-size clusters
Masahiro Kadosawa, Masaaki Nakamura, Yukinori Ohta +1
We estimate phase boundaries of four ordered and two spin-liquid phases for the spin- Kitaev-Heisenberg (KH) model using four kinds of relatively-small clusters, based…
Study of Staggered Magnetization in the Spin- Square-Lattice Heisenberg Model Using Spiral Boundary Conditions
Masahiro Kadosawa, Masaaki Nakamura, Yukinori Ohta +1
We propose an efficient numerical method to obtain local order parameter in two-dimensional systems using spiral boundary conditions. As a benchmark, we first estimate the magnitud…
Excitonic effects on high-harmonic generation in Mott insulators
Mina Udono, Koudai Sugimoto, Tatsuya Kaneko +1
To study excitonic effects on high-harmonic generation (HHG) in Mott insulators, we investigate pumped nonequilibrium dynamics in the one-dimensional extended Hubbard model. By emp…
One-dimensional projection of two-dimensional systems using spiral boundary conditions
Masahiro Kadosawa, Masaaki Nakamura, Yukinori Ohta +1
We introduce spiral boundary conditions (SBCs) as a useful tool for handling the shape of finite-size periodic clusters. Using SBCs, a lattice model for more than two dimensions ca…
Collective mode excitations and simulated -edge resonant-inelastic x-ray scattering spectra in antiferromagnetic CaRuO
Shunsuke Yamamoto, Yukinori Ohta, Koudai Sugimoto
Using the three-orbital Hubbard model, we investigate the low-energy excitation spectra in the antiferromagnetic phase of CaRuO. We calculate the dynamical susceptibilities…
Charge-ordered state satisfying the Anderson condition in LiRh2O4 arising from local dimer order
Manabu Shiomi, Keita Kojima, Naoyuki Katayama +8
We report on the charge-ordered structure of LiRh2O4 arising below the metal-insulator transition at 170 K. Structural studies using synchrotron X-rays have revealed that the charg…