Gauge fields from strain in graphene

Gauge fields and interferometry in folded graphene

Diego Rainis,1,* Fabio Taddei,1 Marco Polini,1,2 Gladys León,1,2 Francisco Guinea,3,2 and Vladimir I. Fal’ko4,2 1NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, I-56126 Pisa, Italy 2Kavli Institute for Theoretical Physics China, CAS, Beijing 100190, China 3Instituto de Ciencia de Materiales de Madrid (CSIC), Sor Juana Inés de la Cruz 3, E-28049 Madrid, Spain 4Physics Department, La...

Fictitious gauge fields in bilayer graphene

We discuss the effect of elastic deformations on the electronic properties of bilayer graphene membranes. Distortions of the lattice translate into fictitious gauge fields in the electronic Dirac Hamiltonian that are explicitly derived here for arbitrary elastic deformations, including in-plane as well as flexural (out-of-plane) distortions. We include gauge fields associated to intraas well as...

Continuum Gauge Fields from Lattice Gauge Fields

On the lattice some of the salient features of pure gauge theories and of gauge theories with fermions in complex representations of the gauge group seem to be lost. These features can be recovered by considering part of the theory in the continuum. The prerequisite for that is the construction of continuum gauge fields from lattice gauge fields. Such a construction, which is gauge covariant an...

Pseudomagnetic fields and triaxial strain in graphene

Topological features and gauge fields in graphene superlattices. Detecting Topological Currents in Graphene Superlattices

The quest for crystals whose electronic bands show non trivial topological features has not ceased since the discovery of the Quantum Hall Effect. The amazing current quantization in QHE devices can be traced back to edge states which emerge from non trivial electronic structures[1, 2]. Topological properties are typically associated to integer numbers, so that they are quite robust against per...