[2404. 07165] Pressure-tuned many-body phases through $Γ$-K . . . As a result, applying uniaxial pressure to a twisted bilayer induces a charge-transfer from the K valley to the flat bands in the Γ valley Upon Wannierizing moiré bands from both valleys, we establish the relevant tight-binding model parameters and calculate the effective interaction strengths using the constrained random phase approximation
Pressure-tuned many-body phases through -K valleytronics in moiré . . . As a result, applying uniaxial pressure to a twisted bilayer induces a charge-transfer from the K valley to the flat bands in the Γ valley Upon Wannierizing moiré bands from both valleys, we establish the relevant tight-binding model parameters and calculate the effective interaction strengths using the constrained random phase approximation
Hybridized intervalley moiré excitons and flat bands in twisted WSe Fig 2 Excitonic center-of-mass dispersion within the corresponding mBZ for 2° twisted (a) and (b) and 58° twisted (c) and (d) bilayer WSe2 on SiO2 For the bright K–K excitons [a and c] electrons and holes are tightly pinned to one of the two layers yielding either pure intra- (red) or interlayer exciton states (blue)
Tuning the low-energy band structure in twisted bilayer WSe gt;2 . . . While the momentum positioning of the valence-band maxima (VBM) is independent of twist angle, we find that the energetic separation between the hole bands at the K point of the Brillouin zone and the higher binding-energy hole band at Γ can be varied in excess of 100 meV We explore the mechanisms underpinning this evolution and discuss the
Linear resistivity at van Hove singularities in twisted bilayer WSe2 - PNAS Here, we study twisted bilayer (TB- ) WSe2 and report on the tunability of emergent phenomena driven by the high density of states caused by vanishing slopes in the dispersion relation: so- called Van Hove singularities (VHSs)
Superconductivity in twisted bilayer WSe2 - Nature Robust superconductivity is observed in twisted bilayer tungsten diselenide (WSe2) on the verge of Coulomb-induced charge localization around half-band filling and zero external displacement fields
Highly tunable band structure in ferroelectric R-stacked bilayer WSe2 The spontaneous polarization of ferroelectric R-stacked homobilayers produces a highly tunable band structure, which, together with strain-induced piezoelectricity, governs the topology and correlated electronic phases of twisted bilayers