• Publications
  • Influence
Skyrmion lattice in a two-dimensional chiral magnet
of the chiral magnet re-written in the CP 1 representation is shown to be a convenient framework for the analysis of the Skyrmion states. Phase diagram of the model at zero temperature gives a
Direct observation of a coupling between spin, lattice and electric dipole moment in multiferroic YMnO 3
YMnO{sub 3} has an antiferromagnetic transition at 76 K with a ferroelectric transition at much higher temperature, making it a rare example of systems having both ferroelectric and magnetic
Dynamics of Skyrmion crystals in metallic thin films.
A new dissipation mechanism in noncollinear spin textures that can lead to a much faster spin relaxation than Gilbert damping is found.
Orbital-angular-momentum based origin of Rashba-type surface band splitting.
The existence of local orbital angular momentum on the surfaces of high-Z materials plays a crucial role in the formation of Rashba-type surface band splitting and the band splitting originates from electric dipole interaction, not from the relativistic Zeeman splitting as proposed in the original Rashba picture.
Skyrmions and anomalous Hall effect in a Dzyaloshinskii-Moriya spiral magnet
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 diagram containing the
Chiral spin states in the pyrochlore Heisenberg magnet : Fermionic mean-field theory and variational Monte Carlo calculations
Fermionic mean-field theory and variational Monte Carlo calculations are employed to shed light on the possible uniform ground states of the Heisenberg model on the pyrochlore lattice. Among the
Ferroelectrically tunable magnetic skyrmions in ultrathin oxide heterostructures
The discovery of ferroelectrically tunable skyrmions in ultrathin BaTiO3/SrRuO3 bilayer heterostructures is reported and can simultaneously enhance the integratability and addressability ofskyrmion-based functional devices.
Skyrmion Generation by Current
Skyrmions, once a hypothesized field-theoretical object believed to describe the nature of elementary particles, became common sightings in recent years among several non-centrosymmetric metallic
Spin-orbit coupled Bose-Einstein condensate under rotation.
The nature of single particle states is thoroughly examined in the Landau level basis and is shown to support the formation of a half-quantum vortex, which is facilitated when SO coupling and rotation are both strong.
Chiral orbital-angular momentum in the surface states of Bi2Se3.
First-principles calculation shows that OAM in the surface states is significant and is locked to the electron momentum in the opposite direction to the spin, forming chiral OAM states, opening a new possibility for strong light-induced spin-polarized current in surface states.