Excitonic negative refraction mediated by magnetic orders
Withers, F. et al. Light-emitting diodes by band-structure engineering in van der Waals heterostructures. Nat. Mater. 14, 301–306…
A metastable tetragonal phase in two-dimensional halide perovskite lattices driven by a coherent Higgs mode
Dhanabalan, B. et al. Directional anisotropy of the vibrational modes in 2D-layered perovskites. ACS Nano 14, 4689–4697 (2020).…
Imaging supermoiré relaxation in helical trilayer graphene
Nam, N. N. & Koshino, M. Lattice relaxation and energy band modulation in twisted bilayer graphene. Phys. Rev.…
Ultrafast Coulomb blockade in an atomic-scale quantum dot
Sample preparation Our WSe2 samples are grown via metal organic chemical vapor deposition on few-layer epitaxial graphene supported…
Single-crystalline monolayer semiconductors with coherent quantum transport by vicinal van der Waals epitaxy
Cui, X. et al. Multi-terminal transport measurements of MoS2 using a van der Waals heterostructure device platform. Nat.…
Ultranarrow electroluminescence from magnetic excitons in the van der Waals antiferromagnetic semiconductor NiPS3
NiPS3 has a monoclinic structure, where Ni ions are octahedrally coordinated by six S ligands, and the resulting…
Bichromatic moiré superlattices for tunable quadrupolar trions and correlated states
Structures of R- and H-stacked WSe2/WS2/WSe2 heterotrilayers We fabricated dual-gate WSe2/WS2/WSe2 heterotrilayer devices, which allow independent control of…
Fermi polarons under strain-induced pseudomagnetic fields
Pseudospin in strained TMDs The spatial symmetry of TMDs dictates that a linearly polarized photon in a state…
Observation of hyperbolic intersubband polaritons in native-dielectric-doped van der Waals semiconductor quantum wells
Intersubband transition and native-dielectric-doping The intersubband transition energies in the WSe2 QWs can be approximated with an infinite…
Photoinduced twist and untwist of moiré superlattices
Cao, Y. et al. Correlated insulator behaviour at half-filling in magic-angle graphene superlattices. Nature 556, 80–84 (2018). Article …
Field-tunable valley coupling in a dodecagonal semiconductor quasicrystal
Shechtman, D., Blech, I., Gratias, D. & Cahn, J. W. Metallic phase with long-range orientational order and no…
Quantum interference and occupation control in high harmonic generation from monolayer WS2
Transition from perturbative to strong-field driven HHG in monolayer WS2 Figure 1a schematically illustrates the electronic processes in monolayer…