36 citations · 113 across the 11 of their papers we have counts for
11 papers
Current-control of chaos and effects of thermal fluctuations in magnetic tunnel junctions
Ryo Tatsumi, Shinji Miwa, Hiroaki Matsueda +1
We theoretically investigate the chaotic behavior of spin-torque ferromagnetic resonance in magnetic tunnel junctions (MTJs) with perpendicular magnetic anisotropy under thermal fl…
Trade-off relation between integrated metrological gain and local dissipation in magnetic-field sensing by quantum spin ensemble
Nozomu Takahashi, Le Bin Ho, Hiroaki Matsueda
Quantum metrology plays a central role in precision sensing, where quantum enhancement of detection performance is crucial for both fundamental studies and practical applications.…
Circuit-based cavity magnonics in the ultrastrong and deep-strong coupling regimes
Takahiro Chiba, Ryunosuke Suzuki, Takashi Otaki +1
We theoretically study nonperturbative strong-coupling phenomena in cavity magnonics systems in which the uniform magnetization dynamics (magnons) in a ferromagnet is coupled to th…
Gain-driven magnon-polariton dynamics in the ultrastrong coupling regime: Effective circuit approach for coherence versus nonlinearity
Ryunosuke Suzuki, Takahiro Chiba, Hiroaki Matsueda
We theoretically study the dynamics of gain-driven magnon-polaritons (MPs), which characterizes auto-oscillation of MPs, across the strong coupling (SC) and ultrastrong coupling (U…
Disordered purification phase transition in hybrid random circuits
Kengo Anzai, Hiroaki Matsueda, Yoshihito Kuno
Noise is inevitable in realistic quantum circuits. It arises randomly in space. Inspired by spatial non-uniformity of the noise, we investigate the effects of spatial modulation on…
Chaotic magnetization dynamics in magnetic Duffing oscillator
Ryo Tatsumi, Takahiro Chiba, Takashi Komine +1
We propose a magnetic analogy of the Duffing oscillator--magnetic Duffing oscillator--which is characterized by a double-well magnetic potential of a ferromagnet with a uniaxial ma…
Unconventional Josephson supercurrent diode effect induced by chiral spin-orbit coupling
Andreas Costa, Osamu Kanehira, Hiroaki Matsueda +1
Chiral materials lacking mirror symmetry can exhibit unconventional spin-orbit fields, including fully momentum-aligned radial Rashba fields as seen in twisted van der Waals homobi…
Photo-induced spin-state change in itinerant correlated-electron system
Y. Kanamori, H. Matsueda, S. Ishihara
Photo-induced spin-state change in itinerant correlated-electron system is studied. The model Hamiltonians before and after photon-pumping are derived from the two-orbital Hubbard…
Numerical Study of Photo-Induced Dynamics in Double-Exchange Model
Y. Kanamori, H. Matsueda, S. Ishihara
Photo-induced spin and charge dynamics in double-exchange model are numerically studied. The Lanczos method and the density-matrix renormalization-group method are applied to one-d…
Dynamical coupling and separation of multiple degrees of freedom in a photoexcited double-exchange system
Y. Kanamori, H. Matsueda, S. Ishihara
We present a theory of ultrafast photo-induced dynamics in a spin-charge coupled system, motivated by pump-probe experiments in perovskite manganites. A microscopic picture for mul…
Anomalous temperature dependence of the single-particle spectrum in the organic conductor TTF-TCNQ
N. Bulut, H. Matsueda, T. Tohyama +1
The angle-resolved photoemission spectrum of the organic conductor TTF-TCNQ exhibits an unusual transfer of spectral weight over a wide energy range for temperatures 60K<T<260K. In…