Research

Prospective undergraduate (thesis) students and applicants to our graduate program are encouraged to read this page.

Unusual Spin Structures in Momentum Space

We study unusual spin structures and their associated physical properties in systems such as bismuth thin films, ferroelectric bulk materials, graphene on Ni substrates, and oxide artificial superlattice interfaces.

Magnetism in Graphene

Graphene exhibits magnetism when edges are introduced. We demonstrated that electronic states and magnetism can be controlled via carrier doping for both zigzag and armchair edges. This work was also highlighted in Nature Physics Research Highlights .

Berry Phase and Related Phenomena

Electric polarization, the order parameter of ferroelectricity, is described by the Berry phase of Bloch wave functions. We develop computational methods based on the Berry phase approach and apply them to dielectric materials. We also investigate contributions of Berry curvature to thermoelectric coefficients.