Probing crossover from analogous weak antilocalization to localization by an Aharonov-Bohm interferometer on topological insulator surface

Details Probing crossover from analogous weak antilocalization to localization by an Aharonov-Bohm interferometer on topological insulator surface Probing crossover from analogous weak antilocalization to localization by an Aharonov-Bohm interferometer on topological insulator surface

2011-11-04

arxiv.org/abs/1111.1052v2

Appl. Phys. Lett. 100, 133103 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4.2 APL pages, 2 figures

Scientific paper

We propose a scanning tunneling microscopy Aharonov-Bohm (AB) interferometer on the surface of a topological insulator (TI) to probe the crossover from analogous weak antilocalization (WAL) to weak localization (WL) phenomenon via the AB oscillations in spin-resolved local density of states (LDOS). Based on our analytical and numerical results, we show that with increasing the energy gap of TI surface states, the $\Phi_{0}/2$=$hc/2e$ periodic AB oscillations in spin-resolved LDOS gradually transit into the $\Phi_{0}$ periodic oscillations.

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