1012.0104 (Yuyuan Qin et al.)

Experimental evidence on the Altshuler-Aronov-Spivak interference of the
topological surface states in the exfoliated Bi2Te3 nanoflakes    [PDF]

Yuyuan Qin, Zhaoguo Li, Fengqi Song, Qianghua Wang, Wangfeng Ding, Xuefeng Wang, Haifeng Ding, Baigeng Wang, Chris Van Haesondonck, Jianguo Wan, Min Han, Y. H. Zhang, Guanghou Wang

Here we demonstrate the Altshuler-Aronov-Spivak (AAS) interference of the
topological surface states on the exfoliated Bi2Te3 microflakes by a flux
period of h/2e in their magnetoresistance oscillations and its weak field
character. Both the osillations with the period of h/e and h/2e are observed.
The h/2e-period AAS oscillation gradually dominates with increasing the sample
widths and the temperatures. This reveals the transition of the Dirac Fermions'
transport to the diffusive regime.

View original: http://arxiv.org/abs/1012.0104