Speaker
Abhiram Soori
Description
We study electronic transport across a helical edge state
exposed to a uniform magnetic field over a finite length. We
show that this system exhibits Fabry-Pérot type resonances
in electronic transport. The intrinsic spin anisotropy of
the helical edge states allows us to tune these resonances
by changing the direction of the magnetic field while
keeping its magnitude constant. These resonances provide a
unique way to probe the helical nature of the theory. We
also study the effect of a static impurity which can induce
back-scattering in the presence of a magnetic field.
Ref: arXiv:1112.5400
Ref: arXiv:1112.5400
