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Universal interaction-driven gap in metallic carbon nanotubes

Creator:

Senger, Mitchell J., McCulley, Daniel R., Lotfizadeh, Neda, Deshpande, Vikram V., and Minot, Ethan D.

Abstract:

Suspended metallic carbon nanotubes (m-CNTs) exhibit a remarkably large transport gap that can exceed 100 meV. Both experiment and theory suggest that strong electron-electron interactions play a crucial role in generating this electronic structure. To further understand this strongly-interacting system, we have performed electronic measurements of suspended m-CNTs with known...

Resource Type:

Preprint and Article

Full Text:

) Upper bound:  = 2kT/D = [450 meV∙nm]/D (3b) 8 Previous work by Aspitarte et al. compared room
Dielectric Engineering Boosts the Efficiency of Carbon Nanotube Photodiodes

Creator:

Senger, Mitchell J., Kefayati, Ali, Bertoni, Andrea, Perebeinos, Vasili, and Minot, Ethan D.

Abstract:

Carbon nanotube (CNT) photodiodes are a promising system for high-efficiency photocurrent generation due to the strong Coulomb interactions that can drive carrier multiplication. If the Coulomb interactions are too strong, however, exciton formation can hamper photocurrent generation. Here, we explore, experimentally and theoretically, the effect of the environmental dielectric constant...

Resource Type:

Article

Full Text:

, 798–803. (19) Aspitarte, L.; McCulley, D. R.; Minot, E. D. Photocurrent Quantum Yield in Suspended