Topologically Nontrivial Bismuth(111) Thin Films Grown on Bi2Te3

Abstract

Using high-resolution angle-resolved photoemission spectroscopy, the electronic structure near the Fermi level and the topological property of the Bi(111) films grown on the Bi${}_2$Te${}_3$(111) substrate were studied. Very different from the bulk Bi, we found another surface band near the $\bar{M}$ point besides the two well-known surface bands on the Bi(111) surface. With this new surface band, the bulk valence band and the bulk conduction band of Bi can be connected by the surface states. Our band mapping revealed odd number of Fermi crossings of the surface bands, which provided a direct experimental signature that Bi(111) thin films of a certain thickness on the Bi${}_2$Te${}_3$(111) substrate can be topologically nontrivial in three dimension.

References in corpus (9)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Topological Insulators with Inversion Symmetry
• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Strong spin-orbit splitting on Bi surfaces
• Electronic phase transitions of bismuth under strain from relativistic self-consistent GW calculations
• Quasiparticle Dynamics in Reshaped Helical Dirac Cone of Topological Insulators
• Surface band structure of ${\text{Bi}}_{1-x}{\text{Sb}}_x$(111)

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• First-principles study of electric-field-induced topological phase transition in one-bilayer Bi(111)
• $Z_2$ topology of bismuth
• Electronic properties of bismuth nanostructures
• Mono-elemental saturable absorber in mode-locked fiber laser: A review
• Anomalous Hall Effect in Thin Bismuth
• Kinetics and the crystallographic structure of bismuth during liquefaction and solidification on the insulating substrate