Search Results for author: Shun-Li Yu

Found 2 papers, 2 papers with code

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Itinerant topological magnons in Haldane Hubbard model with a nearly-flat electron band

1 code implementation • 25 Aug 2019 • Zhao-Long Gu, Zhao-Yang Dong, Shun-Li Yu, Jian-Xin Li

We find an exact set of bases for magnons in the flatband limit constructed from sublattice particle-hole vectors and derive an effective model to explore the origin of the topological magnon which is attributed to the ``mass inversion mechanism''.

Strongly Correlated Electrons

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Paper
Code

Ferromagnetism and spin excitations in topological Hubbard models with a flatband

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

1
Paper
Code
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