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Conferences > CLEO_QELS > 2016 > FTu4L > FTu4L.4

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, and Theodore B. Norris

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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.

© 2016 Optical Society of America

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