▎ 摘　　要

We generalize the continuum model for Moire structures made from twisted graphene layers, in order to include lattice relaxation and the formation of channels at very small (marginal) twist angles. We show that a precise description of the electronic structure at such small angles can be achieved by (i) calculating first the relaxed atomic structure, (ii) projecting the interlayer electronic hopping parameters using a suitable basis of Bloch states, and (iii) increasing the number of harmonics in the continuum approximation to interlayer hopping. The results show a complex structure of quasi one dimensional states when a finite bias is applied.