Testing electron–phonon coupling for the superconductivity in kagome metal CsV3Sb5

Y Zhong, S Li, H Liu, Y Dong, K Aido, Y Arai… - Nature …, 2023 - nature.com
In crystalline materials, electron-phonon coupling (EPC) is a ubiquitous many-body
interaction that drives conventional Bardeen-Cooper-Schrieffer superconductivity. Recently …

Density matrix renormalization group based downfolding of the three-band Hubbard model: Importance of density-assisted hopping

S Jiang, DJ Scalapino, SR White - Physical Review B, 2023 - APS
Typical Wannier-function downfolding starts with a mean-field or density functional set of
bands to construct the Wannier functions. Here, we carry out a controlled approach, using …

Traces of electron-phonon coupling in one-dimensional cuprates

T Tang, B Moritz, C Peng, ZX Shen… - Nature …, 2023 - nature.com
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 time …

Robust charge-density-wave correlations in the electron-doped single-band Hubbard model

P Mai, NS Nichols, S Karakuzu, F Bao… - Nature …, 2023 - nature.com
There is growing evidence that the hole-doped single-band Hubbard and t− J models do not
have a superconducting ground state reflective of the high-temperature cuprate …

Spin-triplet pairing induced by near-neighbor attraction in the extended Hubbard model for cuprate chain

DW Qu, BB Chen, HC Jiang, Y Wang, W Li - Communications Physics, 2022 - nature.com
In quantum materials, the electronic interaction and the electron-phonon coupling are, in
general, two essential ingredients, the combined impact of which may drive exotic phases …

Fast and scalable quantum Monte Carlo simulations of electron-phonon models

B Cohen-Stead, O Bradley, C Miles, G Batrouni… - Physical Review E, 2022 - APS
We introduce methodologies for highly scalable quantum Monte Carlo simulations of
electron-phonon models, and we report benchmark results for the Holstein model on the …

A perspective on machine learning and data science for strongly correlated electron problems

S Johnston, E Khatami, R Scalettar - Carbon Trends, 2022 - Elsevier
Numerical approaches to the correlated electron problem have achieved considerable
success, yet are still constrained by several bottlenecks, including high order polynomial or …

Momentum-resolved spin-conserving two-triplon bound state and continuum in a cuprate ladder

Y Tseng, E Paris, KP Schmidt, W Zhang… - Communications …, 2023 - nature.com
Studying multi-particle elementary excitations has provided unique access to understand
collective many-body phenomena in correlated electronic materials, paving the way towards …

Suppressed superexchange interactions in the cuprates by bond-stretching oxygen phonons

S Li, S Johnston - Physical Review B, 2023 - APS
We study a multiorbital Hubbard–Su-Schrieffer-Heeger model for the one-dimensional (1D)
corner-shared cuprates in the adiabatic and nonadiabatic limits using exact diagonalization …

One-and two-particle properties of the weakly interacting two-dimensional Hubbard model in proximity to the van Hove singularity

BDE McNiven, H Terletska, GT Andrews, JPF LeBlanc - Physical Review B, 2022 - APS
We study the weak-coupling limit of the t− t′− U Hubbard model on a two-dimensional
square lattice using a direct perturbative approach. Aided by symbolic computational tools …