5 papers
Programmable Spin Conversion in Gradient Quantum Matter
Mamoru Matsuo, Yuta Sekino, Hiroyuki Tajima
We propose programmable spin conversion in ultracold gases as gradient quantum matter, whose spin-dependent self-energy varies in space. Quantum kinetic theory shows that a dissipa…
Thermal Spin Polarization Driven by Nuclear Spin-Orbit Coupling in Neutron Star Pasta
Hiroyuki Tajima, Yuta Sekino, Hiroshi Funaki +3
We discuss anomalous spin polarization on the surface of nuclear pasta in a neutron star, driven by a nuclear spin-orbit interaction. We present an effective two-band model of surf…
Gyromagnetic Angular Momentum Interconversion in Neutron Stars
Hiroshi Funaki, Yuta Sekino, Hiroyuki Tajima +3
We propose a novel mechanism for angular momentum (AM) exchange between the crust and core of a neutron star (NS) via the gyromagnetic effect. Using extended hydrodynamics, we mode…
Thermomagnetic anomalies in quantum magnon transport caused by tunable junction geometries in cold atomic systems
Yuta Sekino, Yuya Ominato, Hiroyuki Tajima +2
We study magnon-driven spin and heat transport in a magnetic linear junction (MLJ) formed by two ferromagnets in optical lattices linked via linearly aligned bonds. Using the Schwi…
Thermomagnetic Anomalies by Magnonic Criticality in Ultracold Atomic Transport
Yuta Sekino, Yuya Ominato, Hiroyuki Tajima +2
We investigate thermomagnetic transport in an ultracold atomic system with two ferromagnets linked via a magnetic quantum point contact. Using nonequilibrium Green's function appro…