357 citations · 2.3k across the 56 of their papers we have counts for
8 papers · 1 filter
Mean-field Modelling of Moiré Materials: A User's Guide with Selected Applications to Twisted Bilayer Graphene
Yves H. Kwan, Ziwei Wang, Glenn Wagner +3
We review the theoretical modelling of moiré materials, focusing on various aspects of magic-angle twisted bilayer graphene (MA-TBG) viewed through the lens of Hartree-Fock mean-fi…
Multi-Q spin-valley order in twisted WSe2
Arthur Bril, Nai Chao Hu, Nick Bultinck
We report on a study of the interacting phase diagram of -twisted WSe at moiré hole filling , in which we find previously-overlooked types of magnetism. Specif…
Putting a new spin on the incommensurate Kekulé spiral: from spin-valley locking and collective modes to fermiology and implications for superconductivity
Ziwei Wang, Glenn Wagner, Yves H. Kwan +3
We revisit the global phase diagram of magic-angle twisted bilayer and [symmetric] trilayer graphene (MA-TBG/TSTG) in light of recent scanning tunneling microscopy (STM) measuremen…
Strange metal and Fermi arcs from disordering spin stripes
Xu Zhang, Nick Bultinck
We revisit the effective theory for fluctuating spin stripes coupled to a Fermi surface, and consider the parameter regime where a spin nematic phase intervenes between the spin de…
Valence-bonds, spin liquids and unconventional criticality in a 1D Kondo insulator
Nai Chao Hu, Rui-Zhen Huang, Nick Bultinck
We consider a one-dimensional multi-orbital Kondo lattice model and show that by tuning the kinetic energy of the itinerant electrons it is possible to stabilize Kondo insulators w…
Extracting average properties of disordered spin chains with translationally invariant tensor networks
Kevin Vervoort, Wei Tang, Nick Bultinck
We develop a tensor network-based method for calculating disorder-averaged expectation values in random spin chains without having to explicitly sample over disorder configurations…
Constraints from anti-unitary symmetries on phase diagrams of sign problem-free models
Xu Zhang, Nick Bultinck
A powerful way to guarantee the absence of a sign problem in determinantal quantum Monte Carlo simulations is imposing a particular type of anti-unitary symmetries. It is shown tha…
First-Principles Evidence for Strongly Correlated Superconductivity Driven by Structural Variations in LaNiO
Daan Verraes, Tom Braeckevelt, Nick Bultinck +1
We conduct first-principles simulations of LaNiO, a nickelate in which recent experiments have shown signs of high-temperature superconductivity. Within the hydrostatic…