Trigonal distortion of topologically confined channels in bilayer Graphene

In this work we show that the trigonal warping of the electronic bands in bilayer graphene dramatically modifies the behavior of the one-dimensional modes topologically confined due to an inhomogeneous bias that changes sign across a channel. The topologically protected states are present but their behavior is disrupted from the predicted in the isotropic approximation. We present detailed studies of the electronic properties of the 1D channel in function of the orientation of the channel.
Comment: 4 pages, 4 figures