141 citations · 190 across the 10 of their papers we have counts for
13 papers
Violation of the magnonic Wiedemann-Franz law in the strong nonlinear regime
Kouki Nakata, Yuichi Ohnuma, Se Kwon Kim
The celebrated Wiedemann-Franz (WF) law which governs the relation between charge and heat transport traces back to the experimental discovery in 1853 by Wiedemann and Franz. Despi…
Direct and alternating magnon spin currents across a junction interface irradiated by linearly polarized laser
Kouki Nakata, Yuichi Ohnuma
The developments in the field of quantum optics raise expectations that laser-matter coupling is a promising building block for magnonics. Here, we propose a method for the generat…
Optomagnonic Josephson effect in antiferromagnets
Kouki Nakata
Combining advanced technologies of optics and antiferromagnetic spintronics, we present a method to realize ultrafast spin transport. The optical Barnett effect provokes quasiequil…
Magnonic thermal transport using the quantum Boltzmann equation
Kouki Nakata, Yuichi Ohnuma
We present a formula for thermal transport in the bulk of Bose systems based on the quantum Boltzmann equation (QBE). First, starting from the quantum kinetic equation and using th…
Optomagnonic Barnett effect
Kouki Nakata, Shintaro Takayoshi
Combining the technologies of quantum optics and magnonics, we find that the circularly polarized laser can dynamically realize the quasiequilibrium magnon Bose-Einstein condensate…
Laser control of magnonic topological phases in antiferromagnets
Kouki Nakata, Se Kwon Kim, Shintaro Takayoshi
We study the laser control of magnon topological phases induced by the Aharonov-Casher effect in insulating antiferromagnets (AFs). Since the laser electric field can be considered…