113 citations · 1.2k across the 44 of their papers we have counts for
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Plasmonic quantum nonlinear Hall effect in noncentrosymmetric 2D materials
Riki Toshio, Norio Kawakami
We investigate an interplay between quantum geometrical effects and surface plasmons through surface plasmonic structures, based on an electron hydrodynamic theory. First we demons…
Nonreciprocal electron hydrodynamics under magnetic fields: applications to nonreciprocal surface magnetoplasmons
Ryotaro Sano, Riki Toshio, Norio Kawakami
Recent experiments have elucidated that novel nonequilibrium states inherent in the so-called hydrodynamic regime are realized in ultrapure metals with sufficiently strong momentum…
Anomalous Hydrodynamic Transport in Interacting Noncentrosymmetric Metals
Riki Toshio, Kazuaki Takasan, Norio Kawakami
In highly conductive metals with sufficiently strong momentum-conserving scattering, the electron momentum is regarded as a long-lived quantity, whose dynamics is described by an e…
Floquet engineering of topological phases protected by emergent symmetries under resonant drives
Kaoru Mizuta, Kazuaki Takasan, Norio Kawakami
Floquet engineering is one of the most vigorous fields in periodically driven (Floquet) systems, with which we can control phases of matter usually by high-frequency drives. In thi…
Nonlocal optical responses of ultrapure metals in the hydrodynamic regime
Riki Toshio, Kazuaki Takasan, Norio Kawakami
Our conventional understanding of optical responses in metals has been based on the Drude theory. In recent years, however, it has become possible to prepare ultrapure metallic sam…
High-frequency Expansion for Floquet Prethermal Phases with Emergent Symmetries: Application to Time Crystals and Floquet Engineering
Kaoru Mizuta, Kazuaki Takasan, Norio Kawakami
Prethermalization, where quasi-steady states are realized in the intermediate long time regime (prethermal regime), in periodically driven (Floquet) systems is an important phenome…