# 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.

#### 16 Citations

Shubnikov de Haas quantum oscillation of the surface states in the metallic Bismuth Telluride sheets

- Physics
- 2013

AbstractMetallic Bi2Te3 crystalline sheets with the room-temperature
resistivity of above 10 mΩ cm were prepared and their magnetoresistive transport was
measured in a field of up to 9 T. The… Expand

Indications of topological transport by universal conductance fluctuations in Bi2Te2Se microflakes

- Physics
- 2014

Universal conductance fluctuations (UCFs) are extracted in the magnetoresistance responses in bulk-insulating Bi2Te2Se microflakes. Their two-dimensional character is demonstrated by field-tilting… Expand

Quantum oscillation and nontrivial transport in the Dirac semimetal Cd3As2 nanodevice

- Physics
- 2016

Here, we report on the Shubnikov-de Haas oscillation in high-quality Cd3As2 nanowires grown by a chemical vapor deposition approach. The dominant transport of topological Dirac fermions is evident by… Expand

Electron localization in ultrathin films of three-dimensional topological insulators*

- Physics
- 2016

The recent discovery of three-dimensional (3D) topological insulators (TIs) has provided a fertile ground for obtaining further insights into electron localization in condensed matter systems. In the… Expand

Quantum transport properties of
β-Bi4I4
near and well beyond the extreme quantum limit

- Physics
- 2021

We have investigated the magneto-transport properties of β-Bi4I4 bulk crystal, which was recently theoretically proposed and experimentally demonstrated to be a topological insulator. At low… Expand

Experimental evidences of topological surface states of β-Ag2Te

- Physics
- 2013

We present evidence of topological surface states in β-Ag2Te through first-principles calculations, periodic quantum interference effect and ambipolar electric field effect in single crystalline… Expand

Two-dimensional universal conductance fluctuations and the electron-phonon interaction of surface states in Bi2Te2Se microflakes

- Materials Science, Medicine
- Scientific reports
- 2012

Experimental evidence of the UCFs of the two-dimensional surface state in the bulk insulating Bi2Te2Se microflakes is reported and the electron-phonon interaction is addressed as a secondary source of the surface state dephasing based on the temperature-dependent scaling behavior. Expand

Quantum interference and Aharonov-Bohm oscillations in topological insulators.

- Physics, Medicine
- Reports on progress in physics. Physical Society
- 2013

An overview of some of the main quantum transport properties of TI surfaces and the efforts to use quantum interference phenomena, such as weak anti-localization and the Aharonov-Bohm effect, to verify in a transport experiment the Dirac nature of the surface state and its defining properties. Expand

Synthesis and field emission properties of topological insulator Bi₂Se₃ nanoflake arrays.

- Materials Science, Medicine
- Nanotechnology
- 2012

X-ray photoelectron spectroscopy characterizations indicate that the rapid surface oxidation may prohibit the detection of the topological surface state and results in a low field emission current of the synthesized Bi(2)Se(3) nanoflake arrays. Expand

Quantum transport in Dirac and Weyl semimetals: a review

- Physics
- 2017

Abstract Topological semimetals are well known for the linear energy band dispersion in the bulk state and topologically protected surface state with arc-like Fermi surface. The angle resolved… Expand

#### References

SHOWING 1-10 OF 17 REFERENCES

Anomalous Aharonov-Bohm conductance oscillations from topological insulator surface states.

- Physics, Medicine
- Physical review letters
- 2010

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.

- Physics, Medicine
- Physical review letters
- 2010

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.

- Physics, Medicine
- Nature materials
- 2010

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.

- Physics, Medicine
- Nature nanotechnology
- 2011

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.

- Physics, Medicine
- Physical review letters
- 1985

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

- Materials Science, Physics
- 2010

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 to… Expand

Visualizing topological insulating Bi2Te3 quintuple layers on SiO2-capped Si substrates and its contrast optimization.

- Materials Science, Medicine
- Journal of nanoscience and nanotechnology
- 2011

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

- Chemistry, Medicine
- Science
- 2010

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).

- Physics, Medicine
- Nature communications
- 2010

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

- Physics
- 2011

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 the… Expand