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Topological Insulator Nanowires and Nanoribbons
Desheng Kong, Jason C. Randel, Hailin Peng +7
Recent theoretical calculations and photoemission spectroscopy measurements on the bulk Bi2Se3 material show that it is a three-dimensional topological insulator possessing conduct…
Quantum Imaging of Topologically Unpaired Spin-Polarized Dirac Fermions
Kenjiro K. Gomes, Wonhee Ko, Warren Mar +3
The motion of a relativistic particle is linked to its spin by the Dirac equation. Remarkably, electrons in two-dimensional materials can mimic such Dirac particles but must always…
Aharonov-Bohm interference in topological insulator nanoribbons
Hailin Peng, Keji Lai, Desheng Kong +6
Topological insulators represent novel phases of quantum matter with an insulating bulk gap and gapless edges or surface states. The two-dimensional topological insulator phase was…
Hierarchy of Electronic Properties of Chemically Derived and Pristine Graphene Probed by Microwave Imaging
Worasom Kundhikanjana, Keji Lai, Hailiang Wang +3
Local electrical imaging using microwave impedance microscope is performed on graphene in different modalities, yielding a rich hierarchy of the local conductivity. The low-conduct…
Nanoscale Electronic Inhomogeneity in In2Se3 Nanoribbons Revealed by Microwave Impedance Microscopy
Keji Lai, Hailin Peng, Worasom Kundhikanjana +6
Driven by interactions due to the charge, spin, orbital, and lattice degrees of freedom, nanoscale inhomogeneity has emerged as a new theme for materials with novel properties near…