Magnetic torque oscillations from warped helical surface states in topological insulators

Details Magnetic torque oscillations from warped helical surface states in topological insulators Magnetic torque oscillations from warped helical surface states in topological insulators

2011-09-26

arxiv.org/abs/1109.5538v1

Phys. Rev. B 84, 155102 (2011)

Physics

Condensed Matter

Materials Science

6 pages, 4 figures

Scientific paper

A magnetic torque method is proposed that probes the warping and mass gap of Dirac cone surface states in topological insulators like Bi2X3 (X=Se,Te). A rotating field parallel to the surface induces a paramagnetic moment in the helical surface states for nonzero warping. It is non-collinear with the applied field and therefore produces torque oscillations as function of the field angle which are a direct signature of the surface states. The torque dependence on field strength and angle, the chemical potential and the Dirac cone parameters like warping strength and mass gap is calculated. It is shown that the latter leads to a symmetry reduction in the fourfold torque oscillations.

Affiliated with

Also associated with

No associations

Rating

Magnetic torque oscillations from warped helical surface states in topological insulators 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 Magnetic torque oscillations from warped helical surface states in topological insulators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic torque oscillations from warped helical surface states in topological insulators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-689162