Tommaso Cea

TL;DR: In this paper, the effect of the long-range Coulomb interaction on twisted graphene bilayers near a magic angle was investigated, and the results suggest that the nonsuperconducting broken symmetry phases observed experimentally are induced by the long range exchange interaction.

TL;DR: In this paper, a detailed microscopic derivation of the nonlinear optical response is provided, which shows that the 3$ √ √ O(n) current response is controlled by the lattice-modulated density fluctuations.

TL;DR: These results add piezoelectricity to the known properties of monolayer hBN, which makes it a desirable candidate for novel electromechanical and stretchable optoelectronic devices, and pave a way to control the local electric field and carrier concentration in van der Waals heterostructures via strain.

TL;DR: In this paper, the effect of the long-range interactions on the band structure and van Hove singularities of the low-energy bands of twisted bilayer bilayers was studied.

TL;DR: This work investigates the fate of the Higgs mode in the unconventional case where 2E_{gap} becomes larger than 2Δ_{0}, as due to strong coupling or strong disorder, and shows that in this situation, the amplitude fluctuations never identify a real mode, since such a "bosonic" limit is always reached via strong mixing with the phase fluctuations, which dominate the low-energy part of the spectrum.