Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition

Jun Park, Sangwan Sim, Nikesh Koirala, Matthew Brahlek, Seongshik Oh, Hyunyong Choi

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

Abstract

We present ultrafast optical studies of the Dirac surface dynamics in a topological insulator Bi2Se3 via optical pump mid-infrared probe spectroscopy. We observed largely enhanced carrier relaxation when the topological-phase transition takes place.

Original languageEnglish
Title of host publication2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467371094
DOIs
Publication statusPublished - 2016 Jan 7
Event11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015 - Busan, Korea, Republic of
Duration: 2015 Aug 242015 Aug 28

Publication series

Name2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015
Volume2

Other

Other11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015
CountryKorea, Republic of
CityBusan
Period15/8/2415/8/28

Fingerprint

Fermions
fermions
Phase transitions
insulators
Pumps
Spectroscopy
pumps
Infrared radiation
probes
spectroscopy

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Park, J., Sim, S., Koirala, N., Brahlek, M., Oh, S., & Choi, H. (2016). Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition. In 2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015 [7375968] (2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015; Vol. 2). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CLEOPR.2015.7375968
Park, Jun ; Sim, Sangwan ; Koirala, Nikesh ; Brahlek, Matthew ; Oh, Seongshik ; Choi, Hyunyong. / Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition. 2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015. Institute of Electrical and Electronics Engineers Inc., 2016. (2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015).
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title = "Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition",
abstract = "We present ultrafast optical studies of the Dirac surface dynamics in a topological insulator Bi2Se3 via optical pump mid-infrared probe spectroscopy. We observed largely enhanced carrier relaxation when the topological-phase transition takes place.",
author = "Jun Park and Sangwan Sim and Nikesh Koirala and Matthew Brahlek and Seongshik Oh and Hyunyong Choi",
year = "2016",
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Park, J, Sim, S, Koirala, N, Brahlek, M, Oh, S & Choi, H 2016, Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition. in 2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015., 7375968, 2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015, vol. 2, Institute of Electrical and Electronics Engineers Inc., 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015, Busan, Korea, Republic of, 15/8/24. https://doi.org/10.1109/CLEOPR.2015.7375968

Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition. / Park, Jun; Sim, Sangwan; Koirala, Nikesh; Brahlek, Matthew; Oh, Seongshik; Choi, Hyunyong.

2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015. Institute of Electrical and Electronics Engineers Inc., 2016. 7375968 (2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015; Vol. 2).

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

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AU - Oh, Seongshik

AU - Choi, Hyunyong

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Park J, Sim S, Koirala N, Brahlek M, Oh S, Choi H. Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition. In 2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015. Institute of Electrical and Electronics Engineers Inc. 2016. 7375968. (2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015). https://doi.org/10.1109/CLEOPR.2015.7375968