8 citations · 23 across the 10 of their papers we have counts for
10 papers
Extracting the pairing gap from van Hove singularities in rf spectra of the Fermi Hubbard model
Chuping Li, Kaichao Zhang, Junru Wu +5
We show that van Hove singularities in rf spectra of the 3D attractive Fermi Hubbard model provide a robust route to extracting the pairing gap. Four types of singularities are cla…
Rf spectra and pseudogap in ultracold Fermi gases across the BCS-BEC crossover from pairing fluctuation theory
Chuping Li, Lin Sun, Kaichao Zhang +5
The pseudogap phenomenon is a hallmark of strongly interacting Fermi systems, from high-temperature superconductors to ultracold atomic gases, yet its precise origin remains debate…
Spectral study of the pseudogap in unitary Fermi gases
Chuping Li, Lin Sun, Kaichao Zhang +5
The existence of a pseudogap in unitary Fermi gases has recently been established and measured experimentally [Li et al., Nature 626, 288 (2024)]. This lends strong support for the…
Effects of particle-hole fluctuations on the superfluid transition in two-dimensional atomic Fermi gases
Junru Wu, Zongpu Wang, Lin Sun +6
Proper treatment of the many-body interactions is of paramount importance in our understanding of strongly correlated systems. Here we investigate the effects of particle-hole fluc…
Quantum Geometry, Anomalous Scaling, and Strong Pseudogap Superfluidity in a Flat-Band Lieb Lattice
Lin Sun, Hao Deng, Yuxuan Wu +6
Flat-band systems such as magic-angle twisted bilayer graphene host strong-correlation superconductivity at vanishingly weak coupling, yet how quantum geometry and pairing fluctuat…
Flat band effects on the ground-state BCS-BEC crossover in atomic Fermi gases in a quasi-two-dimensional Lieb lattice
Hao Deng, Chuping Li, Yuxuan Wu +2
The ground-state superfluid behavior of ultracold atomic Fermi gases with a short-range attractive interaction in a quasi-two-dimensional Lieb lattice is studied using BCS mean-fie…
Ground states of atomic Fermi gases in a two-dimensional optical lattice with and without population imbalance
Lin Sun, Qijin Chen
We study the ground state phase diagram of population balanced and imbalanced ultracold atomic Fermi gases with a short range attractive interaction throughout the crossover from B…
Pairing phenomena and superfluidity of atomic Fermi gases in a two-dimensional optical lattice: Unusual effects of lattice-continuum mixing
Lin Sun, Jibiao Wang, Xiang Chu +1
We study the superfluid behavior of ultracold atomic Fermi gases with a short range attractive interaction in a two-dimensional optical lattice (2DOL) using a pairing fluctuation t…
Superfluidity and pairing phenomena in ultracold atomic Fermi gases in one-dimensional optical lattices, Part II: Effects of population imbalance
Jibiao Wang, Lin Sun, Qiang Zhang +4
In this paper, we study the effect of population imbalance and its interplay with pairing strength and lattice effect in atomic Fermi gases in a one-dimensional optical lattice. We…
Unusual destruction and enhancement of superfluidity of atomic Fermi gases by population imbalance in a one-dimensional optical lattice
Qijin Chen, Jibiao Wang, Lin Sun +1
We study the superfluid behavior of a population imbalanced ultracold atomic Fermi gases with a short range attractive interaction in a one-dimensional (1D) optical lattice, using…