231 citations · 1.1k across the 14 of their papers we have counts for
14 papers
Berry-Phase Breakdown and Semiclassical Reconciliation in Topological Dirac Fock-Darwin states
Ye-ping Jiang
I investigate the two-dimensional Dirac fermion analogue of artificial atoms (Fock-Darwin states, FD) in a circular n-p junction on a topological insulator surface. The FD states i…
Berry-phase switch in electrostatically-confined topological surface states
Jun Zhang, Ye-ping Jiang, Xu-Cun Ma +1
Here we visualize the trapping of topological surface states in the circular n-p junctions on the top surface of the 7-quintuple-layer three dimensional (3D) topological insulator…
Selective Trapping of Hexagonally Warped Topological Surface States in a Triangular Quantum Corral
Mu Chen, Yeping Jiang, Junping Peng +10
The surface of a three-dimensional topological insulator (TI) hosts two-dimensional massless Dirac fermions (DFs), the gapless and spin-helical nature of which yields many exotic p…
Modification of the hybridization gap by twisted stacking of quintuple layers in a three dimensional topological insulator thin film
Changyuan Zhou, Dezhi Song, Yeping Jiang +1
Twisting the stacking of layered materials leads to rich new physics. A three dimensional (3D) topological insulator film host two dimensional gapless Dirac electrons on top and bo…
Visualizing the in-gap states in domain boundaries of ultra-thin topological insulator films
Jun Zhang, Junbo Cheng, Shuaihua Ji +1
Ultra-thin topological insulators provide a platform of realizing many exotic phenomena such a Quantum spin Hall effect, Quantum anomalous Hall effect, etc. These effects or states…
Robust Surface States indicated by Magnetotransport in SmB6 Thin Films
Jie Yong, Yeping Jiang, Xiaohang Zhang +3
SmB6 has been predicted and verified as a prototype of topological Kondo insulators (TKIs). Here we report longitudinal magnetoresistance and Hall coefficient measurements on co-sp…
Charge ordering in the electron-doped superconductor Nd2-xCexCuO4
Eduardo H. da Silva Neto, Riccardo Comin, Feizhou He +5
In cuprate high-temperature superconductors, an antiferromagnetic Mott insulating state can be destabilized toward unconventional superconductivity by either hole- or electron-dopi…
Composition-spread Growth and the Robust Topological Surface State of Kondo insulator SmB6 Thin Films
Jie Yong, Yeping Jiang, Demet Usanmaz +7
Topological insulators are a class of materials with insulating bulk but protected conducting surfaces due to the combination of spin-orbit interactions and time-reversal symmetry.…
Imaging the Electron-Boson Coupling in Superconducting FeSe
Can-Li Song, Yi-Lin Wang, Ye-Ping Jiang +7
Scanning tunneling spectroscopy has been used to reveal signatures of a bosonic mode in the local quasiparticle density of states of superconducting FeSe films. The mode appears be…
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…
Suppression of Superconductivity by Twin Boundaries in FeSe
Can-Li Song, Yi-Lin Wang, Ye-Ping Jiang +6
Low-temperature scanning tunneling microscopy and spectroscopy are employed to investigate twin boundaries in stoichiometric FeSe films grown by molecular beam epitaxy. Twin bounda…
Landau quantization and the thickness limit of topological insulator thin films of Sb2Te3
Yeping Jiang, Yilin Wang, Mu Chen +7
We report the experimental observation of Landau quantization of molecular beam epitaxy grown Sb2Te3 thin films by a low-temperature scanning tunneling microscope. Different from a…
Fermi Level Tuning of Epitaxial Sb2Te3 Thin Films on Graphene by Regulating Intrinsic Defects and Substrate Transfer Doping
Yeping Jiang, Y. Y. Sun, Mu Chen +9
High-quality Sb2Te3 films are obtained by molecular beam epitaxy on graphene substrate and investigated by in situ scanning tunneling microscopy/spectroscopy. Intrinsic defects res…
Topological insulator Bi2Se3 thin films grown on double-layer graphene by molecular beam epitaxy
Can-Li Song, Yi-Lin Wang, Ye-Ping Jiang +14
Atomically flat thin films of topological insulator Bi2Se3 have been grown on double-layer graphene formed on 6H-SiC(0001) substrate by molecular beam epitaxy. By a combined study…