Graphene bilayers with a twist
Near a magic twist angle, bilayer graphene transforms from a weakly correlated Fermi liquid
to a strongly correlated two-dimensional electron system with properties that are …
to a strongly correlated two-dimensional electron system with properties that are …
Electronic materials with nanoscale curved geometries
As the dimensions of a material shrink from an extended bulk solid to a nanoscale structure,
size and quantum confinement effects become dominant, altering the properties of the …
size and quantum confinement effects become dominant, altering the properties of the …
[HTML][HTML] Imaging quantum oscillations and millitesla pseudomagnetic fields in graphene
The exceptional control of the electronic energy bands in atomically thin quantum materials
has led to the discovery of several emergent phenomena. However, at present there is no …
has led to the discovery of several emergent phenomena. However, at present there is no …
Magnetic suppression of non-Hermitian skin effects
Skin effect, where macroscopically many bulk states are aggregated toward the system
boundary, is one of the most important and distinguishing phenomena in non-Hermitian …
boundary, is one of the most important and distinguishing phenomena in non-Hermitian …
Ubiquitous defect-induced density wave instability in monolayer graphene
Quantum materials are notoriously sensitive to their environments, where small
perturbations can tip a system toward one of several competing ground states. Graphene …
perturbations can tip a system toward one of several competing ground states. Graphene …
Non-Hermitian exceptional Landau quantization in electric circuits
Alternating current RLC electric circuits form an accessible and highly tunable platform
simulating Hermitian as well as non-Hermitian (NH) quantum systems. We propose here a …
simulating Hermitian as well as non-Hermitian (NH) quantum systems. We propose here a …
Pseudomagnetic fields enabled manipulation of on-chip elastic waves
The physical realization of pseudomagnetic fields (PMFs) is an engaging frontier of
research. As in graphene, elastic PMF can be realized by the structural modulations of Dirac …
research. As in graphene, elastic PMF can be realized by the structural modulations of Dirac …
Giant and controllable valley currents in graphene by double pumped thz light
The field of valleytronics considers the creation and manipulation of “valley states”, charge
excitations characterized by a particular value of the crystal momentum in the Brillouin zone …
excitations characterized by a particular value of the crystal momentum in the Brillouin zone …
Strain-induced plasmon confinement in polycrystalline graphene
Terahertz spectroscopy is a perfect tool to investigate the electronic intraband conductivity of
graphene, but a phenomenological model (Drude-Smith) is often needed to describe …
graphene, but a phenomenological model (Drude-Smith) is often needed to describe …
Moiré fringe induced gauge field in photonics
We realize moiré fringe induced gauge field in a double-layer photonic honeycomb
metacrystal with mismatched lattice constants. Benefitting from the generated strong …
metacrystal with mismatched lattice constants. Benefitting from the generated strong …