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Electro-spinon in one-dimensional Mott insulator
Hosho Katsura, Masahiro Sato, Takashi Furuta +1
The low-energy dynamical optical response of dimerized and undimerized spin liquid states in a one-dimensional charge transfer Mott insulator is theoretically studied. An exact ana…
Self-organized quantum transitions in a spin-electron coupled system
W. Koshibae, N. Furukawa, N. Nagaosa
We investigate quantum dynamics of the excited electronic states in the double-exchange model at half-filling by solving coupled equations for the quantum evolution of electrons an…
Skyrmions and Anomalous Hall Effect in a Dzyloshinskii-Moriya Spiral Magnet
Su Do Yi, Shigeki Onoda, Naoto Nagaosa +1
Monte Carlo simulation study of a classical spin model with Dzylosinskii-Moriya interaction and the spin anisotropy under the magnetic field is presented. We found a rich phase dia…
Giant spin rotation in the normal metal/quantum spin Hall junction
Takehito Yokoyama, Yukio Tanaka, Naoto Nagaosa
We study theoretically reflection problem in the junction between a normal metal and an insulator characterized by a parameter , which is a usual insulator for or a quantu…