3 citations · 3 across the 1 of their papers we have counts for
4 papers
Optical absorption spectra in SrCu_2O_3 two-leg spin ladder
Nobuyasu Haga, Sei-ichiro Suga
We calculate the phonon-assisted optical-absorption spectra in SrCu_2O_3 two-leg spin-ladder systems. The results for two models proposed for SrCu_2O_3 are compared. In the model i…
Dynamical structure factors of two-leg spin ladder systems
Nobuyasu Haga, Sei-ichiro Suga
We investigate dynamical properties of two-leg spin ladder systems. In a strong coupling region, an isolated mode appears in the lowest excited states, while in a weak coup…
Dynamical structure factors of the magnetization-plateau state in the bond-alternating spin chain with a next-nearest-neighbor interaction
Nobuyasu Haga, Sei-ichiro Suga
We calculate the dynamical structure factors of the magnetization-plateau state in the bond-alternating spin chain with a next-nearest-neighbor interaction. The results sho…
NMR relaxation rate of (quasi-)one-dimensional spin gapped systems in magnetic fields
Nobuyasu Haga, Sei-ichiro Suga
The NMR relaxation rates of (quasi-)one-dimensional spin gapped systems such as the spin ladder with a diagonal interaction and the Haldane-gap system are investigated at l…