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Surface-assisted Spin Hall Effect in Au Films with Pt Impurities
B. Gu, I. Sugai, T. Ziman +5
We show, both experimentally and theoretically, a novel route to obtain giant room temperature spin Hall effect due to surface-assisted skew scattering. In the experiment, we repor…
Theoretically predicted picosecond optical switching of spin chirality in multiferroics
Masahito Mochizuki, Naoto Nagaosa
We show theoretically with an accurate spin Hamiltonian describing the multiferroic Mn perovskites that the application of the picosecond optical pulse with a terahertz frequency c…
Theory of electric polarization in multi-orbital Mott insulators
Maxim Mostovoy, Kentaro Nomura, Naoto Nagaosa
The interaction between the electric field, E, and spins in multi-orbital Mott insulators is studied theoretically. We find a generic dynamical coupling mechanism, which works for…
Observation of the Magnon Hall Effect
Y. Onose, T. Ideue, H. Katsura +3
The Hall effect usually occurs when the Lorentz force acts on a charge current in a conductor in the presence of perpendicular magnetic field. On the other hand, neutral quasi-part…
Quantum Renormalization of the Spin Hall Effect
Bo Gu, Jing-Yu Gan, Nejat Bulut +4
By quantum Monte Carlo simulation of a realistic multiorbital Anderson impurity model, we study the spin-orbit interaction (SOI) of an Fe impurity in Au host metal. We show, for th…
Spin model of magnetostrictions in multiferroic Mn perovskites
Masahito Mochizuki, Nobuo Furukawa, Naoto Nagaosa
We theoretically study origins of the ferroelectricity in the multiferroic phases of the rare-earth (R) Mn perovskites, RMnO3, by constructing a realistic spin model including the…