86 citations · 251 across the 11 of their papers we have counts for
11 papers
Universal Conductance Fluctuations of Topological Insulators
Shuai Zhang, Zhaoguo Li, Fengqi Song
As an exotic quantum condensed matter, the topological insulator (TI) is a bulk-insulating material with a Dirac-type conducting surface state. Such dissipationless transport of to…
The positive piezoconductive effect in graphene
Kang Xu, Ke Wang, Wei Zhao +17
As the thinnest conductive and elastic material, graphene is expected to play a crucial role in post-Moore era. Besides applications on electronic devices, graphene has shown great…
Experimental evidence and control of the bulk-mediated intersurface coupling in topological insulator Bi2Te2Se nanoribbons
Zhaoguo Li, Ion Garate, Jian Pan +14
Nearly a decade after the discovery of topological insulators (TIs), the important task of identifying and characterizing their topological surface states through electrical transp…
Indications of the topological transport by the universal conductance fluctuations in the Bi2Te2Se microflakes
Zhaoguo Li, Yuze Meng, Jian Pan +6
Universal conductance fluctuations (UCFs) are extracted in the magnetoresistance responses in the bulk-insulating Bi2Te2Se microflakes. Its two-dimensional character is demonstrate…
Aging the Cu-doped Bi2Te3 crystals for the topological transport and its atomic tunneling-clustering dynamics
Taishi Chen, Qian Chen, Koen Schouteden +13
We report on the observation of the two-dimensional weak antilocalization in (Cu0.1Bi0.9)2Te3.06 crystals relying on measurements of the magnetoresistance in a tilted field. The de…
Enhanced quantum coherence in graphene caused by Pd cluster deposition
Yuyuan Qin, Junhao Han, Guoping Guo +8
We report on the unexpected increase in the dephasing lengths of a graphene sheet caused by the deposition of Pd nanoclusters, as demonstrated by weak localization measurements. Th…
Shubnikov de Haas quantum oscillation of the surface states in the metallic Bismuth Telluride sheets
Taishi Chen, Junhao Han, Zhaoguo Li +8
Metallic 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 Tes…
Two-dimensional universal conductance fluctuations and the electron-phonon interaction of topological surface states in Bi2Te2Se nanoribbons
Zhaoguo Li, Taishi Chen, Haiyang Pan +9
The universal conductance fluctuations (UCFs), one of the most important manifestations of mesoscopic electronic interference, have not yet been demonstrated for the two-dimensiona…
Experimental evidence on the Altshuler-Aronov-Spivak interference of the topological surface states in the exfoliated Bi2Te3 nanoflakes
Yuyuan Qin, Zhaoguo Li, Fengqi Song +10
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 magnetor…
Two-step splitting the expandable graphite for few-layer graphene
Kaiming Liao, Wangfeng Ding, Yuyuan Qin +7
Few-layer graphene sheets are prepared by splitting the expanded graphites using a high-power sonication. Atomic-level quantitative scanning transmission electron microscopy (Q-STE…
Visualizing topological insulating Bi2Te3 quintuple layers on SiO2-capped Si substrates and its contrast optimization
Zhaoguo Li, Yuyuan Qin, Yuewen Mu +8
Thin Bi2Te3 flakes, with as few as 3 quintuple layers, are optically visualized on the SiO2-capped Si substrates. Their optical contrasts vary with the illumination wavelength, fla…