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Ultra-thin Topological Insulator Bi2Se3 Nanoribbons Exfoliated by Atomic Force Microscopy
Seung Sae Hong, Worasom Kundhikanjana, Judy J. Cha +6
Ultra-thin topological insulator nanostructures, in which coupling between top and bottom surface states takes place, are of great intellectual and practical importance. Due to the…
Few-layer Nanoplates of Bi2Se3 and Bi2Te3 with Highly Tunable Chemical Potential
Desheng Kong, Wenhui Dang, Judy J. Cha +5
Topological insulator (TI) represents an unconventional quantum phase of matter with insulating bulk bandgap and metallic surface states. Recent theoretical calculations and photoe…
Mapping local optical densities of states in silicon photonic structures with nanoscale electron spectroscopy
Judy J. Cha, Zongfu Yu, Eric Smith +3
Relativistic electrons in a structured medium generate radiative losses such as Cherenkov and transition radiation that act as a virtual light source, coupling to the photonic dens…
Magnetic Doping and Kondo Effect in Bi2Se3 Nanoribbons
Judy J. Cha, James R. Williams, Desheng Kong +6
A simple surface band structure and a large bulk band gap have allowed Bi2Se3 to become a reference material for the newly discovered three-dimensional topological insulators, whic…