Why the first magic-angle is different from others in twisted graphene bilayers: Interlayer currents, kinetic and confinement energy, and wave-function localization

LA Navarro-Labastida, A Espinosa-Champo… - Physical Review B, 2022 - APS
The chiral Hamiltonian for twisted graphene bilayers is analyzed in terms of its squared
Hamiltonian which removes the particle-hole symmetry and thus one bipartite lattice …

Moiré pattern assisted commensuration resonance in disordered twisted bilayer graphene

Z Hou, YY Hu, GW Yang - Physical Review B, 2024 - APS
We investigate the mesoscopic transport through a twisted bilayer graphene (TBG)
consisting of a clean graphene nanoribbon on the bottom and a disordered graphene disk …

Theory of intrinsic acoustic plasmons in twisted bilayer graphene

L Cavicchi, I Torre, P Jarillo-Herrero, FHL Koppens… - Physical Review B, 2024 - APS
We present a theoretical study of the intrinsic plasmonic properties of twisted bilayer
graphene (TBG) as a function of the twist angle θ (and other microscopic parameters such …

Twisted Bilayer MoS2 under Electric Fields: A System with Tunable Symmetry

A Garcia-Ruiz, MH Liu - Nano Letters, 2024 - ACS Publications
Gate voltages take full advantage of 2D systems, making it possible to explore novel states
of matter by controlling their electron concentration or applying perpendicular electric fields …

Combined minivalley and layer control in twisted double bilayer graphene

FK de Vries, J Zhu, E Portoles, G Zheng, M Masseroni… - Physical review …, 2020 - APS
Control over minivalley polarization and interlayer coupling is demonstrated in double
bilayer graphene twisted with an angle of 2.37°. This intermediate angle is small enough for …

Transport and spectral properties of magic-angle twisted bilayer graphene junctions based on local orbital models

M Alvarado, AL Yeyati - Physical Review B, 2021 - APS
The electronic properties of junctions defined electrostatically on twisted bilayer graphene
can be addressed theoretically using lattice models. Recent works have introduced minimal …

Control of valley optical conductivity and topological phases in buckled hexagonal lattice by orientation of in-plane magnetic field

P Nualpijit, B Soodchomshom - Micro and Nanostructures, 2024 - Elsevier
We investigate the optical conductivity, along with longitudinal and transverse conductivities,
in buckled hexagonal lattice such as silicene subjected to both an in-plane magnetic field …

Superconductivity in twisted bilayer graphene: Possible pairing symmetries, impurity-induced states, and Chern number

E Pangburn, M Alvarado, OA Awoga, C Pépin, C Bena - Physical Review B, 2024 - APS
We consider the most energetically favorable symmetry-allowed spin-singlet and spin-triplet
superconducting pairing symmetries in twisted bilayer graphene at the magic angle, whose …

Valley-dependent transport in a mescoscopic twisted bilayer graphene device

WX Shi, HL Liu, J Wang - Chinese Physics B, 2024 - iopscience.iop.org
We study the valley-dependent electron transport in a four-terminal mesoscopic device of
the two monolayer graphene nanoribbons vertically stacked together, where the intersection …