Ultrafast terahertz studies of dirac fermion dynamics in graphene

Hyunyong Choi, Ferenc Borondics, David A. Siegel, Shuyun Zhou, Michael C. Martin, Alessandra Lanzara, Robert A. Kaindl

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

1 Citation (Scopus)

Abstract

We report the broadband optical conductivity and ultrafast carrier dynamics of few-layer graphene. Equilibrium spectra exhibit significant THz and near-IR absorption, consistent with a model of intra- and interband transitions in a dense Dirac electron plasma. Ultrafast THz transmission changes after photoexcitation are dominated by excess holes, with a 1.2-ps exponential decay that reflects minority-carrier recombination.

Original languageEnglish
Title of host publication34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
DOIs
Publication statusPublished - 2009 Dec 31
Event34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009 - Busan, Korea, Republic of
Duration: 2009 Sep 212009 Sep 25

Publication series

Name34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009

Other

Other34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
CountryKorea, Republic of
CityBusan
Period09/9/2109/9/25

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Communication

Cite this

Choi, H., Borondics, F., Siegel, D. A., Zhou, S., Martin, M. C., Lanzara, A., & Kaindl, R. A. (2009). Ultrafast terahertz studies of dirac fermion dynamics in graphene. In 34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009 [5324954] (34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009). https://doi.org/10.1109/ICIMW.2009.5324954