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Correlated electronic phases in twisted bilayer transition metal dichalcogenides
The observation of tunable collective phases in a simple band, which hosts only two holes per unit cell at full filling, establishes twisted bilayer transition metal dichalcogenides as an ideal platform to study correlated physics in two dimensions on a triangular lattice.
Maximized electron interactions at the magic angle in twisted bilayer graphene
Scanning tunnelling spectroscopy is used to map the atomic-scale electronic structure of magic-angle twisted bilayer graphene, finding multiple signatures of electron correlations and thus providing insight into the sought-after mechanism behind superconductivity in graphene.
Transient superconductivity from electronic squeezing of optically pumped phonons
Recent developments in advanced light sources have made it possible to transiently alter the electronic properties of materials by exciting specific atomic vibrations in solids. This study provides a
Magic continuum in twisted bilayer WSe2
Emergent quantum phases driven by electronic interactions can manifest in materials with narrowly dispersing, i.e. "flat", energy bands. Recently, flat bands have been realized in a variety of
Spin and thermal conductivity of quantum spin chains and ladders
We study the spin and thermal conductivity of spin-$\frac{1}{2}$ ladders and chains at finite temperature, relevant for experiments with quantum magnets. Using a state-of-the-art density matrix
Magic Angle Spectroscopy
The electronic properties of heterostructures of atomically-thin van der Waals (vdW) crystals can be modified substantially by Moir\'e superlattice potentials arising from an interlayer twist between
One-dimensional flat bands in twisted bilayer germanium selenide
It is demonstrated by combining large scale ab initio simulations with numerically exact strong correlation approaches that an effective one-dimensional system emerges upon stacking two twisted sheets of GeSe, in marked contrast to all moiré systems studied so far.
Colloquium: Nonthermal pathways to ultrafast control in quantum materials
We review recent progress in utilizing ultrafast light-matter interaction to control the macroscopic properties of quantum materials. Particular emphasis is placed on photoinduced phenomena that do
Thermal Conductivity of the One-Dimensional Fermi-Hubbard Model.
It is demonstrated that energy spreads ballistically in local quenches with initially inhomogeneous energy density profiles in the integrable case, and the relevance of the results for thermalization in ultracold quantum-gas experiments and for transport measurements with quasi-one-dimensional materials is discussed.
Interacting Rice-Mele model: Bulk and boundaries
We investigate the interacting, one-dimensional Rice-Mele model, a prototypical fermionic model of topological properties. To set the stage, we firstly compute the single-particle spectral function,