44 citations · 97 across the 15 of their papers we have counts for
16 papers
Pairing order and condensate fraction across the BCS-BEC crossover in the two-dimensional attractive Hubbard model
Hao Du, Qian Sun, Zhuotao Xie +1
We report a systematic study of the superconducting ground state in the two-dimensional attractive Hubbard model, employing the {\it numerically exact} auxiliary-field quantum Mont…
Thermal Signatures of the Slater-Mott Crossover in the Hubbard Model: From Double Occupancy to Antiferromagnetic Correlation Length
Mingzhong Lu, Yu-Feng Song, Youjin Deng +1
The interaction-driven crossover from a Slater insulator to a Mott insulator in the Néel-ordered ground state of the Hubbard model is a fundamental paradigm of strongly correlated…
Nagaoka supermetal in the particle-doped triangular Hubbard model
Rui Cao, Xiangyue Zhang, Hui Tan +4
While the interplay of correlations and geometric frustration in doped Mott insulators provides a fertile ground for exotic quantum phases, the nature of the metallic state emergin…
Computation of thermal entropy for the doped Hubbard Model
Yu-Feng Song, Youjin Deng, Yuan-Yao He
We develop a highly efficient framework for computing the thermal entropy in the doped Fermi-Hubbard model within the grand-canonical ensemble. The framework comprises four calcula…
Quantum Monte Carlo study of the metal-insulator crossover in the square-lattice Hubbard model
Mingzhong Lu, Yu-Feng Song, Youjin Deng +1
The interaction-driven evolution from a Fermi liquid to a Mott insulator is a hallmark of strongly correlated fermion systems. In this work, we present a {\it numerically unbiased}…
Competition of fermion pairing, magnetism, and charge order in the spin-doped attractive Hubbard gas
Thomas Hartke, Botond Oreg, Chunhan Feng +7
The tension between fermion pairing and magnetism affects numerous strongly correlated electron systems, from high-temperature cuprates to twisted bilayer graphene. Exotic forms of…
In search of exotic pairing in the Hubbard model: many-body computation and quantum gas microscopy
Chunhan Feng, Thomas Hartke, Yuan-Yao He +5
Pair density waves and exotic superconductivity have long been of strong interest, and have attracted much recent attention. We present a joint theoretical and experimental explora…
Spin-triplet pairing instability in a two-dimensional repulsive Hubbard model
Xing-Can Liu, Yu-Feng Song, Yuan-Yao He +2
The search for superconductivity with unconventional pairing symmetry has been a central focus in the study of strongly correlated electron systems. In this work, we report a numer…
Condensate Fraction Scaling and Berezinskii-Kosterlitz-Thouless Transition of Superconductivity and Superfluidity
Yuan-Yao He
Characterizing the superconducting and superfluid transitions in two-dimensional (2D) many-body systems is of broad interest and remains a fundamental issue. In this study, we esta…
Observing Spatial Charge and Spin Correlations in a Strongly-Interacting Fermi Gas
Cyprien Daix, Maxime Dixmerias, Yuan-Yao He +5
In this work, we explore two-dimensional attractive Fermi gases at the microscopic level by probing spatial charge and spin correlations in situ. Using atom-resolved continuum quan…
Ising phase transitions and thermodynamics of correlated fermions in a two-dimensional spin-dependent lattice potential
Zhuotao Xie, Yu-Feng Song, Yuan-Yao He
We present a {\it numerically exact} study of the Hubbard model with spin-dependent anisotropic hopping on the square lattice using auxiliary-field quantum Monte Carlo method. At h…
Thermal Entropy, Density Disorder and Antiferromagnetism of Repulsive Fermions in 3D Optical Lattice
Yu-Feng Song, Youjin Deng, Yuan-Yao He
The celebrated antiferromagnetic (AFM) phase transition was realized in a most recent optical lattice experiment for the 3D fermionic Hubbard model [Shao {\it et al}., Nature {\bf…
Magnetic, thermodynamic, and dynamical properties of the three-dimensional fermionic Hubbard model: A comprehensive Monte Carlo study
Yu-Feng Song, Youjin Deng, Yuan-Yao He
The interplay between quantum and thermal fluctuations can induce rich phenomena at finite temperatures in strongly correlated fermion systems. Here we report a {\it numerically ex…
Extended Metal-Insulator Crossover with Strong Antiferromagnetic Spin Correlation in Half-Filled 3D Hubbard Model
Yu-Feng Song, Youjin Deng, Yuan-Yao He
The Hubbard model at temperatures above the Néel transition, despite being a paramagnet, can exhibit rich physics due to the interplay of Fermi surface, on-site interaction and…
Nature of the mixed-parity pairing of attractive fermions with spin-orbit coupling in optical lattice
Yu-Feng Song, Youjin Deng, Yuan-Yao He
The admixture of spin-singlet and spin-triplet pairing states in superconductors can be typically induced by breaking spatial inversion symmetry. Employing the {\it numerically exa…
Temperature Dependence of Spin and Charge Orders in the Doped Two-Dimensional Hubbard Model
Bo Xiao, Yuan-Yao He, Antoine Georges +1
Competing and intertwined orders including inhomogeneous patterns of spin and charge are observed in many correlated electron materials, such as high-temperature superconductors. I…