199 citations · 1.7k across the 61 of their papers we have counts for
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Colossal enhancement of spin-chirality-related Hall effect by thermal fluctuation
Yasuyuki Kato, Hiroaki Ishizuka
The effect of thermal fluctuation on the spin-chirality-induced anomalous Hall effect in itinerant magnets is theoretically studied. Considering a triangular-lattice model as an ex…
Rectification of Spin Current in Inversion-Asymmetric Magnets with Linearly-Polarized Electromagnetic Waves
Hiroaki Ishizuka, Masahiro Sato
We theoretically propose a method of rectifying spin current with a linearly-polarized electromagnetic wave in inversion-asymmetric magnetic insulators. To demonstrate the proposal…
Robustness of anomaly-related magnetoresistance in doped Weyl semimetals
Hiroaki Ishizuka, Naoto Nagaosa
Weyl semimetal with Weyl fermions at Fermi energy is one of the topological materials, and is a condensed-matter realization of the relativistic fermions. However, there are severa…
Anomalous Hall Effect and Spin Fluctuations in Ionic Liquid Gated SrCoO Thin Films
Ding Zhang, Hiroaki Ishizuka, Nianpeng Lu +4
The recent realization of epitaxial SrCoO thin films has triggered a renewed interest in their electronic, magnetic, and ionic properties. Here we uncover several unusual magne…
Singular nonlinear response in metals due to divergent Berry curvature: application to magneto-resistance in metals with type-II Weyl nodes
Hiroaki Ishizuka, Naoto Nagaosa
The physical properties of metals are often given by the sum of the contributions from the electrons consisting the Fermi surface (FS), and therefore, fine structures of the electr…
Impurity-induced vector spin chirality and anomalous Hall effect in ferromagnetic metals
Hiroaki Ishizuka, Naoto Nagaosa
Scattering by multiple scatterers sometimes gives rise to nontrivial consequences such as anomalous Hall effect. We here study a mechanism for anomalous Hall effect which originate…
Spatio-temporal dynamics of shift current quantum pumping by femtosecond light pulse
U. Bajpai, B. S. Popescu, P. Plechac +4
Shift current---a photocurrent induced by light irradiating noncentrosymmetric materials in the absence of any bias voltage or built-in electric field---is one of the mechanisms of…
Photogalvanic Effect in Weyl Semimetals from First Principles
Yang Zhang, Hiroaki Ishizuka, Jeroen van den Brink +3
Using first-principles calculations, we investigate the photogalvanic effect in the Weyl semimetal material TaAs. We find colossal photocurrents caused by the Weyl points in the ba…
Spontaneous symmetry breaking of domain walls in phase-competing regions
Hiroaki Ishizuka, Yasusada Yamada, Naoto Nagaosa
We study the nature of domain walls in an ordered phase in the phase-competing region of two Ising-type order parameters. Considering a two-component theory, we show that the…