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Electron-Electron Interaction Driven Phenomena in Carbon Nanotube Devices

Ethan Minot- Oregon State University

Wednesday, October 18, 2017
  10:30–11 a.m.

Location: Physics Building 3035
  Parking Information

Category: Seminar

Description: Strong electron-electron (e-e) interactins play an important role in determining the electrical and optical properties of nanomaterials. Our group uses individually-contacted carbon nanotubes (CNTs) as a model experimental system to investigate the physics and applications of these strong interactions. I will discuss: (1) The quantum efficiency of CNT photodiodes, (2) renormalization of the band gap in semiconducting CNTs, (3) the emergence of a Mott insulating state in metallic CNTs. All three od these topics depend critically on the strength of e-e interactions which we tune experimentally using dielectric screening. We also gain new insights by using photocurrent spectroscopy to precisely identify CNT diameter/chirality, and photocurrent microscopy to quantify intrinsic region lengths. 

Additional Information: Colloquia & Seminars

Open to: General Public
Admission: Free
Sponsor: Physics and Astronomy

Contact Information:
Naveen Reddy