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Quantitative assessment of the universal thermopower in the Hubbard model
Wen O. Wang, Jixun K. Ding, Edwin W. Huang +2
As primarily an electronic observable, the room-temperature thermopower in cuprates provides possibilities for a quantitative assessment of the Hubbard model. Using determinant…
Traces of Electron-Phonon Coupling in One-Dimensional Cuprates
Ta Tang, Brian Moritz, Cheng Peng +2
The appearance of certain spectral features in one-dimensional (1D) cuprate materials has been attributed to a strong, extended attractive coupling between electrons. Here, using t…
The Wiedemann-Franz law in doped Mott insulators without quasiparticles
Wen O. Wang, Jixun K. Ding, Yoni Schattner +3
Many metallic quantum materials display anomalous transport phenomena that defy a Fermi liquid description. Here, we use numerical methods to calculate thermal and charge transport…
Spectra of a Gapped Quantum Spin Liquid with a Strong Chiral Excitation on the Triangular Lattice
Ta Tang, Brian Moritz, Thomas P. Devereaux
While a quantum spin liquid (QSL) phase has been identified in the - Heisenberg model on a triangular lattice via numerical calculations, debate persists about whether or…
Anisotropy of the magnetic and transport properties in EuZnAs
Zhi-Cheng Wang, Emily Been, Jonathan Gaudet +12
Several recent studies have shown that the anisotropy in the magnetic structure of \ECA\ plays a significant role in stabilizing the Weyl nodes. To investigate the relationship bet…
Fluctuating intertwined stripes in the strange metal regime of the Hubbard model
Edwin W. Huang, Tianyi Liu, Wen O. Wang +6
Strongly correlated electron systems host a variety of poorly understood correlations in their high temperature normal state. Unlike ordered phases defined by order parameters, the…
Sign-Free Determinant Quantum Monte Carlo Study of Excitonic Density Orders in a Two-Orbital Hubbard-Kanamori Model
Xu-Xin Huang, Brian Moritz, Martin Claassen +1
While excitonic instabilities in multiorbital systems recently have come under scrutiny in a variety of transition-metal compounds, understanding emergence of these instabilities f…
Thermodynamics of correlated electrons in a magnetic field
Jixun K. Ding, Wen O. Wang, Brian Moritz +3
The Hofstadter-Hubbard model captures the physics of strongly correlated electrons in an applied magnetic field, which is relevant to many recent experiments on Moiré materials. Fe…
Charge order and superconductivity in a minimal two-band model for infinite-layer nickelates
Cheng Peng, Hong-Chen Jiang, Brian Moritz +2
The recent discovery of superconductivity in infinite-layer nickelates has drawn considerable attention; however, a consensus on the fundamental building blocks and common ingredie…
Magnon heat transport in a two-dimensional Mott insulator
Wen O. Wang, Jixun K. Ding, Brian Moritz +2
Whether or not anomalies in the thermal conductivity in insulating cuprates can be attributed to antiferromagnetic order and magnons in a 2D Mott insulator remains an intriguing op…
Web-Based Methods for X-ray and Photoelectron Spectroscopies
T. P. Devereaux, B. Moritz, C. Jia +2
We present a simplified web-based application for simulating x-ray and photoelectron spectra of transition metals, built around the notion that web-based applications lower the bar…
Phonon-Mediated Long-Range Attractive Interaction in One-Dimensional Cuprates
Yao Wang, Zhuoyu Chen, Tao Shi +3
Establishing a minimal microscopic model for cuprates is a key step towards the elucidation of a high- mechanism. By a quantitative comparison with a recent \emph{in situ} ang…
Anomalously Strong Near-Neighbor Attraction in Doped 1D Cuprate Chains
Zhuoyu Chen, Yao Wang, Slavko N. Rebec +7
In the cuprates, one-dimensional chain compounds provide a unique opportunity to understand the microscopic physics due to the availability of reliable theories. However, progress…
Intertwined states at finite temperatures in the Hubbard model
E. W. Huang, W. O. Wang, J. K. Ding +5
Significant advances in numerical techniques have enabled recent breakthroughs in the study of various properties of the Hubbard model - a seemingly simple, yet complex model of co…
Evolution of the electronic structure in TaNiSe across the structural transition revealed by resonant inelastic x-ray scattering
Haiyu Lu, Matteo Ross, 1Jung-ho Kim +11
We utilized high-energy-resolution resonant inelastic X-ray scattering (RIXS) at both the Ta and Ni -edges to map out element-specific particle-hole excitations in TaNiSe$…
Superconductivity, Charge-Density-Waves, and Bipolarons in the Holstein model
B. Nosarzewski, E. W. Huang, Philip M. Dee +5
The electron-phonon (e-ph) interaction remains of great interest in condensed matter physics and plays a vital role in realizing superconductors, charge-density-waves (CDW), and po…
Numerical approaches for calculating the low-field dc Hall coefficient of the doped Hubbard model
Wen O. Wang, Jixun K. Ding, Brian Moritz +3
Using determinant Quantum Monte Carlo, we compare three methods of evaluating the dc Hall coefficient of the Hubbard model: the direct measurement of the off-diagonal current…
X-Ray Scattering from Light-Driven Spin Fluctuations in a Doped Mott Insulator
Yao Wang, Yuan Chen, Thomas P. Devereaux +2
Manipulating spin fluctuations with ultrafast laser pulses is a promising route to dynamically control collective phenomena in strongly correlated materials. However, understanding…
Orbital and Spin Character of Doped Carriers in Infinite-Layer Nickelates
M. Rossi, H. Lu, A. Nag +13
The recent discovery of superconductivity in NdSrNiO has drawn significant attention in the field. A key open question regards the evolution of the electronic str…
DC Hall coefficient of the strongly correlated Hubbard model
Wen O. Wang, Jixun K. Ding, Brian Moritz +2
The Hall coefficient is related to the effective carrier density and Fermi surface topology in noninteracting and weakly interacting systems. In strongly correlated systems, the re…
Emergence of Quasiparticles in a Doped Mott Insulator
Yao Wang, Yu He, Krzysztof Wohlfeld +9
How a Mott insulator develops into a weakly coupled metal upon doping is a central question to understanding various emergent correlated phenomena. To analyze this evolution and it…
Time-Resolved Resonant Inelastic X-Ray Scattering in a Pumped Mott Insulator
Yao Wang, Yuan Chen, Chunjing Jia +2
Collective excitations contain rich information about photoinduced transient states in correlated systems. In a Mott insulator, charge degrees of freedom are frozen, but can be act…
Numerical Investigation of Spin Excitations in a Doped Spin Chain
Ekaterina M. Pärschke, Yao Wang, Brian Moritz +3
We study the doping evolution of spin excitations in a 1D Hubbard model and its downfolded spin Hamiltonians, by using exact diagonalization combined with cluster perturbation theo…
Theory for Time-Resolved Resonant Inelastic X-ray Scattering
Yuan Chen, Yao Wang, Chunjing Jia +4
Time-resolved measurements of materials provide a wealth of information on quasiparticle dynamics, and have been the focus of optical studies for decades. In this paper, we develop…