Ahmet Demir

TL;DR: It is shown experimentally that when this angle is close to the ‘magic’ angle the electronic band structure near zero Fermi energy becomes flat, owing to strong interlayer coupling, and these flat bands exhibit insulating states at half-filling, which are not expected in the absence of correlations between electrons.

TL;DR: In this article, the effects of the twist angle between different layers in a van der Waals heterostructure have been investigated and it was shown that when this angle is close to the magic angle, the electronic band structure near zero Fermi energy becomes flat, owing to strong interlayer coupling.

TL;DR: In this paper, the first electronic compressibility measurements of magic-angle twisted bilayer graphene were reported, where the authors determined the chemical potential as a function of carrier density and found the widths of the energy gaps at fractional filling of the moire lattice.

TL;DR: In this article, the Gordon and Betty Moore Foundation (GBMF4541) grant was used for the EpiQS (Emergent Phenomena in Quantum Systems) initiative.

TL;DR: The data show two remarkable phenomena in the Landau level filling factor range ν=2 toν=5 in selective probing of the edge states of the dot: Coulomb blockade peaks arise from the entrance of two electrons rather than one and single-electron capacitance peaks appear uniformly in a magnetic field with a flux periodicity of h/2e.