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

@article{Qin2010ExperimentalEO,
  title={Experimental evidence on the Altshuler-Aronov-Spivak interference of the topological surface states in the exfoliated Bi2Te3 nanoflakes},
  author={Yuyuan Qin and Zhaoguo Li and Fengqi Song and Qianghua Wang and Wangfeng Ding and Xuefeng Wang and Haifeng Ding and Baigeng Wang and Chris Van Haesondonck and Jianguo Wan and Min Han and Yuheng Zhang and Guanghou Wang},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2010}
}
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. 

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References

SHOWING 1-10 OF 17 REFERENCES
Anomalous Aharonov-Bohm conductance oscillations from topological insulator surface states.
TLDR
The conductance maxima are achieved at odd multiples of 1/2Φ(0), implying that a π AB phase for electrons strengthens the metallic nature of surface states, and a key ingredient, the surface curvature induced Berry phase, is emphasized here. Expand
Aharonov-Bohm oscillations in disordered topological insulator nanowires.
TLDR
It is shown how h/e and h/2e flux oscillations of the conductance depend on doping and disorder strength, and a possible explanation for the experiments is provided, and further experiments that could verify the theory are discussed. Expand
Aharonov-Bohm interference in topological insulator nanoribbons.
TLDR
Pronounced Aharonov-Bohm oscillations in the magnetoresistance clearly demonstrate the coherent propagation of two-dimensional electrons around the perimeter of the nanoribbon surface, as expected from the topological nature of the surface states. Expand
Manipulating surface states in topological insulator nanoribbons.
TLDR
Experimental evidence for the modulation of surface states by using a gate voltage to control quantum oscillations in Bi(2)Te(3) nanoribbons and the first observation of h/2e periodic oscillations are reported, suggesting the presence of time-reversed paths with the same relative zero phase at the interference point. Expand
Observation of h/e Aharonov-Bohm oscillations in normal-metal rings.
TLDR
The temperature dependence of both the amplitude of the oscillations and the background are consistent with the recent theory by Stone, while the background structure was not symmetric about zero field. Expand
Crystal symmetry breaking in few-quintuple Bi2Te3 films: Applications in nanometrology of topological insulators
We report results of micro-Raman spectroscopy investigation of the "graphene-like" mechanically exfoliated single-crystal bismuth telluride films with the thickness ranging from a few-nm-range toExpand
Visualizing topological insulating Bi2Te3 quintuple layers on SiO2-capped Si substrates and its contrast optimization.
TLDR
A calculation based on the Fresnel law describes the above observation with the constructions of the layer number-wave length- Contrast three-dimensional (3D) diagram and the cap thickness-wavelength-contrast 3D diagram, applicative in the current studies of topological insulating flakes. Expand
Quantum Oscillations and Hall Anomaly of Surface States in the Topological Insulator Bi2Te3
TLDR
The observation of Shubnikov–de Haas oscillations arising from the surface states in nonmetallic crystals of Bi2Te3 are reported and a Hall anomaly in weak fields is uncovered, which enables the surface current to be seen directly and yield a surface mobility substantially higher than in the bulk. Expand
Coexistence of the topological state and a two-dimensional electron gas on the surface of Bi(2)Se(3).
TLDR
It is shown that the single Dirac cone comprising the topological state of the prototypical topological insulator Bi(2)Se(3) can co-exist with a two-dimensional electron gas (2DEG), a cornerstone of conventional electronics. Expand
Topological insulators and superconductors
Topological insulators are new states of quantum matter which cannot be adiabatically connected to conventional insulators and semiconductors. They are characterized by a full insulating gap in theExpand
...
1
2
...