2 code implementations • 29 Oct 2018 • Xiao-Fei Su, Zhao-Long Gu, Zhao-Yang Dong, Shun-Li Yu, Jian-Xin Li
By using the numerical exact diagonalization method with a projection onto the nearly-flat band, we obtain the ferromagnetic spin-1 excitation spectra for both the Chern and $Z_2$ Hubbard models, consisting of spin waves and Stoner continuum.
Strongly Correlated Electrons
2 code implementations • 16 Jan 2018 • Xiao-Fei Su, Zhao-Long Gu, Zhao-Yang Dong, Jian-Xin Li
Different from previous scenarios that topological magnons emerge in local spin models, we propose an alternative that itinerant electron magnets can host topological magnons.
Strongly Correlated Electrons
