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Manipulating magnetoelectric effect -- Essence learned from CoNbO
Yuki Yanagi, Satoru Hayami, Hiroaki Kusunose
Recent experiments for linear magnetoelectric (ME) response in honeycomb antiferromagnet CoNbO revealed that the electric polarization can be manipulated by the in-plan…
Microscopic Description of Electric and Magnetic Toroidal Multipoles in Hybrid Orbitals
Satoru Hayami, Hiroaki Kusunose
We present a general formalism of multipole descriptions under the space-time inversion group. We elucidate that two types of atomic toroidal multipoles, i.e., electric and magneti…
Emergent odd-parity multipoles and magnetoelectric effects on a diamond structure: implication to 5 transition metal oxides OsO ( K, Rb, and Cs)
Satoru Hayami, Hiroaki Kusunose, Yukitoshi Motome
We report our theoretical predictions on the linear magnetoelectric (ME) effects originating from odd-parity multipoles associated with spontaneous spin and orbital ordering on a d…
Effective bilinear-biquadratic model for noncoplanar ordering in itinerant magnets
Satoru Hayami, Ryo Ozawa, Yukitoshi Motome
Noncollinear and noncoplanar magnetic textures including skyrmions and vortices act as emergent electromagnetic fields and give rise to novel electronic and transport properties. W…