TY - GEN
T1 - Ultrafast terahertz studies of dirac fermion dynamics in graphene
AU - Choi, Hyunyong
AU - Borondics, Ferenc
AU - Siegel, David A.
AU - Zhou, Shuyun
AU - Martin, Michael C.
AU - Lanzara, Alessandra
AU - Kaindl, Robert A.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=72749099615&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=72749099615&partnerID=8YFLogxK
U2 - 10.1109/ICIMW.2009.5324954
DO - 10.1109/ICIMW.2009.5324954
M3 - Conference contribution
AN - SCOPUS:72749099615
SN - 9781424454174
T3 - 34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
BT - 34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
T2 - 34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
Y2 - 21 September 2009 through 25 September 2009
ER -