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Direct observation of quantum confinement of massless Dirac fermions in a topological insulator
Mu Chen, Zhen-Guo Fu, Jun-Ping Peng +9
Since the discovery of topological insulators (TIs)1,2, the peculiar nature of their chiral surface states has been experimentally demonstrated both in bulk and in film materials w…
Experimental Proof of Universal Conductance Fluctuation in Quasi-1D Epitaxial BiSe Wires
Sadashige Matsuo, Kensaku Chida, Daichi Chiba +8
We report on conductance fluctuation in quasi-one-dimensional wires made of epitaxial BiSe thin film. We found that this type of fluctuation decreases as the wire lengt…
Mutual ionization in atomic collisions near the electronic threshold
S. F. Zhang, X. L. Zhu, A. B. Voitkiv +6
We study mutual ionization in collisions between atomic hydrogen and helium at impact velocities near the electronic threshold for this process (determined by the condition that ki…
Fully gapped topological surface states in BiSe films induced by a d-wave high-temperature superconductor
Eryin Wang, Hao Ding, Alexei V. Fedorov +17
Topological insulators are a new class of materials, that exhibit robust gapless surface states protected by time-reversal symmetry. The interplay between such symmetry-protected t…
Demonstration of surface transport in a hybrid Bi2Se3/Bi2Te3 heterostructure
Yanfei Zhao, Cui-Zu Chang, Ying Jiang +9
In spite of much work on topological insulators (TIs), systematic experiments for TI/TI heterostructures remain absent. We grow a high quality heterostructure containing single qui…
Mass acquisition of Dirac fermions in Cr-doped topological insulator Sb2Te3 films
Yeping Jiang, Zhi Li, Canli Song +7
We introduce time-reversal-symmetry breaking by doping Cr atoms into the topmost quintuple layer or into the bulk of Sb2Te3 thin films. We find that even at a high Cr-doping level…