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

doi:10.1109/CLEOPR.2015.7375968

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 proceeding › Conference contribution › peer-review

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 language	English
Title of host publication	2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467371094
DOIs	https://doi.org/10.1109/CLEOPR.2015.7375968
State	Published - Jan 7 2016
Externally published	Yes
Event	11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015 - Busan, Korea, Republic of Duration: Aug 24 2015 → Aug 28 2015

Publication series

Name	2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015
Volume	2

Conference

Conference	11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015
Country/Territory	Korea, Republic of
City	Busan
Period	08/24/15 → 08/28/15

Funding

The wor at Yonsei was supported by National Research Foundation of Korea (NRF) through the government of Korea (MSIP) (Grants No. NRF-2011-0013255, NRF-2009-0083512 and, WCI 2011-001), Global Frontier Program (2014M3A6B3063709), the Yonsei University Yonsei-SNU Collaborative Research Fund of 2014, and the Yonsei University Future-leading Research Initiative of 2014

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10.1109/CLEOPR.2015.7375968

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 Article 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 et al. / 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).

@inproceedings{41c49aafa0d84f929fc2e78ad6361ed2,

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",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015 ; Conference date: 24-08-2015 Through 28-08-2015",

year = "2016",

month = jan,

day = "7",

doi = "10.1109/CLEOPR.2015.7375968",

language = "English",

series = "2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015",

}

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, 08/24/15. 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 et al.
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 proceeding › Conference contribution › peer-review

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T1 - Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition

AU - Park, Jun

AU - Sim, Sangwan

AU - Koirala, Nikesh

AU - Brahlek, Matthew

AU - Oh, Seongshik

AU - Choi, Hyunyong

PY - 2016/1/7

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N2 - 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.

AB - 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.

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DO - 10.1109/CLEOPR.2015.7375968

M3 - Conference contribution

AN - SCOPUS:84964091524

T3 - 2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

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

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015

Y2 - 24 August 2015 through 28 August 2015

ER -

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). doi: 10.1109/CLEOPR.2015.7375968

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

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