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Observation of magnetism induced topological edge state in antiferromagnetic topological insulator MnBi4Te7
HaoKe Xu, Mingqiang Gu, Fucong Fei +16
Breaking time reversal symmetry in a topological insulator may lead to quantum anomalous Hall effect and axion insulator phase. MnBi4Te7 is a recently discovered antiferromagnetic…
Coexistence of Ferroelectric-like Polarization and Dirac-like Surface State in TaNiTe5
Yunlong Li, Zhao Ran, Chaozhi Huang +20
By combining angle-resolved photoemission spectroscopy (ARPES), scanning tunneling microscopy (STM), piezoresponse force microscopy (PFM) and first-principles calculations, we have…
Edge Disorder in Bottom-Up Zigzag Graphene Nanoribbons: Implications for Magnetism and Quantum Electronic Transport
Michele Pizzochero, Gabriela Borin Barin, Kristiāns Čerņevičs +4
We unveil the nature of the structural disorder in bottom-up zigzag graphene nanoribbons along with its effect on the magnetism and electronic transport on the basis of scanning pr…
Strain Tunable Semimetal-Topological-Insulator Transition in Monolayer 1T'-WTe2
Chenxiao Zhao, Mengli Hu, Jin Qin +8
A quantum spin hall insulator(QSHI) is manifested by its conducting edge channels that originate from the nontrivial topology of the insulating bulk states. Monolayer 1T'-WTe2 exhi…
Quantum Electronic Transport Across "Bite" Defects in Graphene Nanoribbons
Michele Pizzochero, Kristiāns Čerņevičs, Gabriela Borin Barin +4
On-surface synthesis has recently emerged as an effective route towards the atomically precise fabrication of graphene nanoribbons of controlled topologies and widths. However, whe…
On-surface synthesis of graphene nanoribbons with zigzag edge topology
Pascal Ruffieux, Shiyong Wang, Bo Yang +11
Graphene-based nanostructures exhibit a vast range of exciting electronic properties that are absent in extended graphene. For example, quantum confinement in carbon nanotubes and…
Giant edge state splitting at atomically precise zigzag edges
Shiyong Wang, Leopold Talirz, Carlo A. Pignedoli +4
Zigzag edges of graphene nanostructures host localized electronic states that are predicted to be spin-polarized. However, these edge states are highly susceptible to edge roughnes…