Soliton Trap in Strained Graphene Nanoribbons

Abstract

The wavefunction of a massless fermion consists of two chiralities, left-handed and right-handed, which are eigenstates of the chiral operator. The theory of weak interactions of elementally particle physics is not symmetric about the two chiralities, and such a symmetry breaking theory is referred to as a chiral gauge theory. The chiral gauge theory can be applied to the massless Dirac particles of graphene. In this paper we show within the framework of the chiral gauge theory for graphene that a topological soliton exists near the boundary of a graphene nanoribbon in the presence of a strain. This soliton is a zero-energy state connecting two chiralities and is an elementally excitation transporting a pseudospin. The soliton should be observable by means of a scanning tunneling microscopy experiment.

7 pages, 4 figures

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Cited by in corpus (8)

• Tuning the pseudospin polarization of graphene by a pseudo-magnetic field
• Soliton fractional charges in graphene nanoribbon and polyacetylene: similarities and differences
• Topological origin of flat-bands as pseudo-Landau levels in uniaxial strained graphene nanoribbons and induced magnetic ordering due to electron-electron interactions
• Topological gap states of semiconducting armchair graphene ribbons
• Robust propagating in-gap modes due to spin-orbit domain walls in graphene
• Lorentz Violation and Topologically Trapped Charge Carriers in 2D Materials
• Analog of Fishtail Anomaly in Plastically Deformed Graphene
• On the electronic viscosity of a Dirac fluid in deformed graphene