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 Scopus citations

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 (US)
Title of host publication34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
DOIs
StatePublished - 2009
Externally publishedYes
Event34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009 - Busan, Korea, Republic of
Duration: Sep 21 2009Sep 25 2009

Publication series

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

Conference

Conference34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
CountryKorea, Republic of
CityBusan
Period9/21/099/25/09

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Communication

Fingerprint Dive into the research topics of 'Ultrafast terahertz studies of dirac fermion dynamics in graphene'. Together they form a unique fingerprint.

Cite this