313 citations · 704 across the 6 of their papers we have counts for
6 papers
Exchange bias driven by the Dzyaloshinskii-Moriya interaction and ferroelectric polarization at G-type antiferromagnetic perovskite interfaces
Shuai Dong, Kunihiko Yamauchi, Seiji Yunoki +6
Exchange bias is usually rationalized invoking spin pinning effects caused by uncompensated antiferromagnetic interfaces. However, for compensated antiferromagnets other extrinsic…
Field angle dependence of the zero-energy density of states in unconventional superconductors: analysis of the borocarbide superconductor YNi2B2C
Yuki Nagai, Nobuhiko Hayashi, Yusuke Kato +2
We investigate the field-angle-dependent zero-energy density of states for YNi2B2C with using realistic Fermi surfaces obtained by band calculations. Both the 17th and 18th bands a…
Magnetically-induced ferroelectricity in orthorhombic manganites: microscopic origin and chemical trends
Kunihiko Yamauchi, Frank Freimuth, Stefan Blügel +1
The microscopic origin of the magnetically-driven ferroelectricity in collinear AFM-E orthorhombic manganites is explained by means of first-principles Wannier functions. We show t…
Interface effects at a half-metal/ferroelectric junction
Kunihiko Yamauchi, Biplab Sanyal, Silvia Picozzi
Magnetoelectric effects are investigated ab-initio at the interface between half-metallic and ferroelectric prototypes: Heusler CoMnSi and perovskite BaTiO. For the Co-term…
Positions of Point-Nodes in Borocarbide Superconductor YNi2B2C
Yuki Nagai, Yusuke Kato, Nobuhiko Hayashi +2
To determine the superconducting gap function of YNi2B2C, we calculate the local density of states (LDOS) around a single vortex core with the use of Eilenberger theory and the ban…
Dual nature of improper ferroelectricity in a magnetoelectric multiferroic
Silvia Picozzi, Kunihiko Yamauchi, Biplab Sanyal +2
Using first principles calculations, we study the microscopic origin of ferroelectricity (FE) induced by magnetic order in the orthorhombic HoMnO3. We obtain the largest ferroelect…