Resolving the Dirac Cone on the Surface of Bi2Te3 Topological Insulator Nanowires by Field-Effect Measurements
arXiv:1405.2036 · doi:10.1063/1.4883887
Abstract
We validate the linear dispersion relation and resolve the Dirac cone on the surface of a single Bi2Te3 nanowire via a combination of field-effect and magnetoresistance measurements by which we unambiguously prove the topological insulator nature of the nanowire surface states. Moreover we show that the experimentally determined carrier concentration, mobility and cyclotron mass of the surface states are in excellent agreement with relativistic models. Our method provides a facile way to identify topological insulators that too small for angle-resolved photo emission spectroscopy.
References in corpus (9)
- 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
- First direct observation of Spin-textures in Topological Insulators : Spin-resolved ARPES as a probe of topological quantum spin Hall effect and Berry's phase
- Surface State Transport and Ambipolar Electric Field Effect in Bi2Se3 Nanodevices
- Quantum interference and Aharonov-Bohm oscillations in topological insulators
- Magnetic oscillations in planar systems with the Dirac-like spectrum of quasiparticle excitations II: transport properties
- Weak localization in ferromagnetic (Ga,Mn)As nanostructures
- Resolving the Dirac Cone on the Surface of Bi2Te3 Topological Insulator Nanowires by Field-Effect Measurements
- Universal conductance fluctuations in indium tin oxide nanowires