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

doi:10.1364/cleo_qels.2016.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, Theodore B. Norris

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	2016 Conference on Lasers and Electro-Optics, CLEO 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781943580118
DOIs	https://doi.org/10.1364/cleo_qels.2016.ftu4l.4
State	Published - Dec 16 2016
Event	2016 Conference on Lasers and Electro-Optics, CLEO 2016 - San Jose, United States Duration: Jun 5 2016 → Jun 10 2016

Publication series

Name	2016 Conference on Lasers and Electro-Optics, CLEO 2016

Other

Other	2016 Conference on Lasers and Electro-Optics, CLEO 2016
Country/Territory	United States
City	San Jose
Period	6/5/16 → 6/10/16

Bibliographical note

Publisher Copyright:
© 2016 OSA.

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10.1364/cleo_qels.2016.ftu4l.4

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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 Article 7787881 (2016 Conference on Lasers and Electro-Optics, CLEO 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1364/cleo_qels.2016.ftu4l.4

Evidence for Bandgap Opening in Buckled Epitaxial Graphene from Ultrafast Time-Resolved Terahertz Spectroscopy. / Mihnev, Momchil T.; Wang, Feng; Liu, Gang et al.
2016 Conference on Lasers and Electro-Optics, CLEO 2016. Institute of Electrical and Electronics Engineers Inc., 2016. 7787881 (2016 Conference on Lasers and Electro-Optics, CLEO 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Mihnev, MT, Wang, F, Liu, G, Rothwell, S, Cohen, PI, Feldman, LC, Conrad, EH & Norris, TB 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., 2016 Conference on Lasers and Electro-Optics, CLEO 2016, San Jose, United States, 6/5/16. https://doi.org/10.1364/cleo_qels.2016.ftu4l.4

Mihnev MT, Wang F, Liu G, Rothwell S, Cohen PI, Feldman LC et al. Evidence for Bandgap Opening in Buckled Epitaxial Graphene from Ultrafast Time-Resolved Terahertz Spectroscopy. In 2016 Conference on Lasers and Electro-Optics, CLEO 2016. Institute of Electrical and Electronics Engineers Inc. 2016. 7787881. (2016 Conference on Lasers and Electro-Optics, CLEO 2016). doi: 10.1364/cleo_qels.2016.ftu4l.4

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

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