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Quantum hydrodynamics of spin winding
Yaroslav Tserkovnyak, Ji Zou, Se Kwon Kim +1
An easy-plane spin winding in a quantum spin chain can be treated as a transport quantity, which propagates along the chain but has a finite lifetime due to phase slips. In a hydro…
Dynamical torques from Shiba states in -wave superconductors
Archana Mishra, So Takei, Pascal Simon +1
Magnetic impurities inserted in a -wave superconductor give rise to spin-polarized in-gap states called Shiba states. We study the back-action of these induced states on the dyn…
Spin transport in an electrically-driven magnon gas near Bose-Einstein condensation: Hartree-Fock-Keldysh theory
So Takei
An easy-plane ferromagnetic insulator in a uniform external magnetic field and in contact with a phonon bath and a normal metal bath is studied theoretically in the presence of dc…
Detecting Spin Transport in Quantum Magnets with Photons
Joshua Aftergood, Mircea Trif, So Takei
A minimally invasive technique is proposed for detecting the differential spin conductance and spin current noise across a junction between two quantum magnets using a high-quality…
Spin diffusion equation in superconductors in the vicinity of Tc
Takuya Taira, Masanori Ichioka, So Takei +1
We microscopically derive the spin diffusion equation in an s-wave superconductor in the vicinity of the superconducting transition temperature Tc. Applying the general relation be…
Noise in tunneling spin current across coupled quantum spin chains
Joshua Aftergood, So Takei
We theoretically study the spin current and its dc noise generated between two spin-1/2 spin chains weakly coupled at a single site in the presence of an over-population of spin ex…