2009/12/25 by Wade DeGottardi, Tzu-Chieh Wei, Victoria Fernández +2 · 1 citation
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Carbon nanotube #Carbon nanotube quantum dot #Condensed matter physics #Dispersion (optics) #Electric field #Electron #Graphene research and applications #Magnetic field #Materials science #Nanotechnology #Nanotube #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Quantum tunnelling #Spin (aerodynamics) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.82.155411
published in Physical Review B 82(15) (American Physical Society) · 4 pages, 2 figures
arxiv created 2009/12/25 · openalex publication_date 2010/10/07 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the properties of conduction electrons in single-walled armchair carbon nanotubes in the presence of mutually orthogonal electric and magnetic fields transverse to the tube's axis. We find that the fields give rise to an asymmetric dispersion in the right- and left-moving electrons along the tube as well as a band-dependent interaction. We predict that such a nanotube system would exhibit spin-band-charge separation and a band-dependent tunneling density of states. We show that in the quantum dot limit, the fields serve to completely tune the quantum states of electrons added to the nanotube. For each of the predicted effects, we provide examples and estimates that are relevant to experiment.