Shi-Guo Peng

May 20, 2024 | link.aps.org | Peng Zou |Huaisong Zhao |Feng Yuan |Shi-Guo Peng

We theoretically investigate a one-dimensional Fulde-Ferrell Fermi superfluid at a finite effective Zeeman field h and study all of the dynamical excitations related to density perturbation. By calculating the density dynamic structure factor, we find anisotropic dynamical excitations in both collective modes and single-particle excitations.

Sep 8, 2023 | link.aps.org | Huaisong Zhao |Xu Yan |Shi-Guo Peng

We theoretically calculate the dynamic structure factor of a two-dimensional Rashba-type spin-orbit-coupled (SOC) Fermi superfluid with the random phase approximation and analyze the main characters of dynamical excitation shown by both density and spin dynamic structure factors during a continuous phase transition between a Bardeen-Cooper-Schrieffer superfluid and a topological superfluid.