Authors
Rintaro Eto, Rico Pohle, and Masahito Mochizuki
Abstract
We theoretically study spin and charge excitations of skyrmion crystals stabilized by conduction-electron-mediated magnetic interactions via spin-charge coupling in a centrosymmetric Kondo-lattice model by large-scale spin-dynamics simulations combined with the kernel polynomial method. We reveal clear segregation of spin and charge excitation channels and nonreciprocal nature of the spin excitations governed by the Fermi-surface geometry, which are unique to the skyrmion crystals in centrosymmetric itinerant hosts and can be a source of novel physical phenomena.
![fig1en](https://www.t.u-tokyo.ac.jp/hs-fs/hubfs/press-release/2022/0630/001/fig1en.png?width=300&name=fig1en.png)
Physical Review Letters: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.129.017201