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The generalized equation of motion for the orbital dynamics in the presence of current
Chyh-Hong Chern, Naoto Nagaosa
The orbital dynamics induced by the charge current is studied theoretically. The equation of motion for the isospin vector in the SU(N) case is derived in the presence of the…
Interfaces of correlated electron systems: Proposed mechanism for colossal electroresistance
Takashi Oka, Naoto Nagaosa
Mott's metal-insulator transition at an interface due to band bending is studied by the density matrix renormalization group (DMRG). We show that the result can be recovered by a s…
Dynamics of localized spins coupled to the conduction electrons with charge/spin currents
Masaru Onoda, Naoto Nagaosa
The effects of the charge/spin currents of conduction electrons on the dynamics of the localized spins are studied in terms of the perturbation in the exchange coupling bet…
Optical Magnetoelectric Effect in Multiferroic Materials: Evidence for a Lorentz Force Acting on a Ray of Light
Kei Sawada, Naoto Nagaosa
We theoretically propose that the optical analog of a Lorentz force acting on a ray of light is realized in multiferroic materials such as GaFeO showing the magnetoelectric eff…
Antiferromagnetism and singlet formation in underdoped high-Tc cuprates: Implications for superconducting pairing
Damien Bensimon, Naoto Nagaosa
The extended model is theoretically studied, in the context of hole underdoped cuprates. Based on results obtained by recent numerical studies, we identify the mean field sta…
Role of relaxation in spin Hall effect
Masaru Onoda, Naoto Nagaosa
The role of the relaxation due to the impurity scattering and/or the contacts to leads/electrodes are studied for the spin Hall effect (SHE). Relaxation is essential to attain the…