Aharonov-Bohm oscillations in disordered topological insulator nanowires

Details Aharonov-Bohm oscillations in disordered topological insulator nanowires Aharonov-Bohm oscillations in disordered topological insulator nanowires

2010-05-20

arxiv.org/abs/1005.3762v2

Phys. Rev. Lett. 105, 156803 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; v2. added data for weak antilocalization

Scientific paper

10.1103/PhysRevLett.105.156803

A direct signature of electron transport at the metallic surface of a topological insulator is the Aharonov-Bohm oscillation observed in a recent study of Bi_2Se_3 nanowires [Peng et al., Nature Mater. 9, 225 (2010)] where conductance was found to oscillate as a function of magnetic flux $\phi$ through the wire, with a period of one flux quantum $\phi_0=h/e$ and maximum conductance at zero flux. This seemingly agrees neither with diffusive theory, which would predict a period of half a flux quantum, nor with ballistic theory, which in the simplest form predicts a period of $\phi_0$ but a minimum at zero flux due to a nontrivial Berry phase in topological insulators. We show how h/e and h/2e flux oscillations of the conductance depend on doping and disorder strength, provide a possible explanation for the experiments, and discuss further experiments that could verify the theory.

Affiliated with

Also associated with

No associations

Rating

Aharonov-Bohm oscillations in disordered topological insulator nanowires 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 Aharonov-Bohm oscillations in disordered topological insulator nanowires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aharonov-Bohm oscillations in disordered topological insulator nanowires will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-211408