Carbon nanotubes in electric and magnetic fields

Details Carbon nanotubes in electric and magnetic fields Carbon nanotubes in electric and magnetic fields

2011-06-16

arxiv.org/abs/1106.3332v1

Phys. Rev. B 84, 085452 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.84.085452

We derive an effective low-energy theory for metallic (armchair and non-armchair) single-wall nanotubes in the presence of an electric field perpendicular to the nanotube axis, and in the presence of magnetic fields, taking into account spin-orbit interactions and screening effects on the basis of a microscopic tight binding model. The interplay between electric field and spin-orbit interaction allows us to tune armchair nanotubes into a helical conductor in both Dirac valleys. Metallic non-armchair nanotubes are gapped by the surface curvature, yet helical conduction modes can be restored in one of the valleys by a magnetic field along the nanotube axis. Furthermore, we discuss electric dipole spin resonance in carbon nanotubes, and find that the Rabi frequency shows a pronounced dependence on the momentum along the nanotube.

Affiliated with

Also associated with

No associations

Rating

Carbon nanotubes in electric and magnetic fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Carbon nanotubes in electric and magnetic fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon nanotubes in electric and magnetic fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-695148