Evidence for Bandgap Opening in Buckled Epitaxial Graphene from Ultrafast Time-Resolved Terahertz Spectroscopy

Momchil T. Mihnev, Feng Wang, Gang Liu, Sara Rothwell, Philip I. Cohen, Leonard C. Feldman, Edward H. Conrad, Theodore B. Norris

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Using ultrafast time-resolved THz spectroscopy, we observe two-orders-of-magnitude increase in the relaxation rate in semiconducting epitaxial graphene relative to pristine epitaxial graphene, attributed to enhancement of the optical-phonon-mediated carrier cooling and recombination over a wide range of electron temperatures.

Original languageEnglish
Title of host publication2016 Conference on Lasers and Electro-Optics, CLEO 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781943580118
Publication statusPublished - Dec 16 2016
Event2016 Conference on Lasers and Electro-Optics, CLEO 2016 - San Jose, United States
Duration: Jun 5 2016Jun 10 2016

Publication series

Name2016 Conference on Lasers and Electro-Optics, CLEO 2016

Other

Other2016 Conference on Lasers and Electro-Optics, CLEO 2016
CountryUnited States
CitySan Jose
Period6/5/166/10/16

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Mihnev, M. T., Wang, F., Liu, G., Rothwell, S., Cohen, P. I., Feldman, L. C., Conrad, E. H., & Norris, T. B. (2016). Evidence for Bandgap Opening in Buckled Epitaxial Graphene from Ultrafast Time-Resolved Terahertz Spectroscopy. In 2016 Conference on Lasers and Electro-Optics, CLEO 2016 [7787881] (2016 Conference on Lasers and Electro-Optics, CLEO 2016). Institute of Electrical and Electronics Engineers Inc..