Terahertz spectroscopy of topological insulator Sb2Se3 and its ultrafast nonequilibrium carrier dynamics

Jaehun Park; Tae Hyeon Kim; Kwangsik Jeong; Hyejin Choi; Seonghoon Jung; Mann Ho Cho

doi:10.1109/IRMMW-THz.2016.7758796

Terahertz spectroscopy of topological insulator Sb₂Se₃ and its ultrafast nonequilibrium carrier dynamics

Jaehun Park, Tae Hyeon Kim, Kwangsik Jeong, Hyejin Choi, Seonghoon Jung, Mann Ho Cho

Department of Physics

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

Abstract

Tuning the band structure of a topological insulator is of interest for developing electronic devices or superconducting devices. Here we report the strain-dependent results for Bi₂Se₃ films of various thicknesses that are grown via a self-organized ordering process. From the UV photoemission/inverse photoemission spectroscopy (UPS/IPES) results, ab initio calculations and THz-TDS data, significant changes of the Fermi level and band gap were observed.

Original language	English
Title of host publication	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Publisher	IEEE Computer Society
ISBN (Electronic)	9781467384858
DOIs	https://doi.org/10.1109/IRMMW-THz.2016.7758796
Publication status	Published - 2016 Nov 28
Event	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Copenhagen, Denmark Duration: 2016 Sep 25 → 2016 Sep 30

Publication series

Name	International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume	2016-November
ISSN (Print)	2162-2027
ISSN (Electronic)	2162-2035

Other

Other	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Country	Denmark
City	Copenhagen
Period	16/9/25 → 16/9/30

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1109/IRMMW-THz.2016.7758796

Fingerprint Dive into the research topics of 'Terahertz spectroscopy of topological insulator Sb<sub>2</sub>Se<sub>3</sub> and its ultrafast nonequilibrium carrier dynamics'. Together they form a unique fingerprint.

Cite this

Park, J., Kim, T. H., Jeong, K., Choi, H., Jung, S., & Cho, M. H. (2016). Terahertz spectroscopy of topological insulator Sb₂Se₃ and its ultrafast nonequilibrium carrier dynamics. In 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 [7758796] (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2016-November). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz.2016.7758796

Park, Jaehun ; Kim, Tae Hyeon ; Jeong, Kwangsik ; Choi, Hyejin ; Jung, Seonghoon ; Cho, Mann Ho. / Terahertz spectroscopy of topological insulator Sb₂Se₃ and its ultrafast nonequilibrium carrier dynamics. 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. IEEE Computer Society, 2016. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz).

@inproceedings{d226c33066034e3989a5705e55893a03,

title = "Terahertz spectroscopy of topological insulator Sb2Se3 and its ultrafast nonequilibrium carrier dynamics",

abstract = "Tuning the band structure of a topological insulator is of interest for developing electronic devices or superconducting devices. Here we report the strain-dependent results for Bi2Se3 films of various thicknesses that are grown via a self-organized ordering process. From the UV photoemission/inverse photoemission spectroscopy (UPS/IPES) results, ab initio calculations and THz-TDS data, significant changes of the Fermi level and band gap were observed.",

author = "Jaehun Park and Kim, {Tae Hyeon} and Kwangsik Jeong and Hyejin Choi and Seonghoon Jung and Cho, {Mann Ho}",

year = "2016",

month = nov,

day = "28",

doi = "10.1109/IRMMW-THz.2016.7758796",

language = "English",

series = "International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz",

publisher = "IEEE Computer Society",

booktitle = "41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016",

address = "United States",

note = "41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 ; Conference date: 25-09-2016 Through 30-09-2016",

}

Park, J, Kim, TH, Jeong, K, Choi, H, Jung, S & Cho, MH 2016, Terahertz spectroscopy of topological insulator Sb₂Se₃ and its ultrafast nonequilibrium carrier dynamics. in 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016., 7758796, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, vol. 2016-November, IEEE Computer Society, 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016, Copenhagen, Denmark, 16/9/25. https://doi.org/10.1109/IRMMW-THz.2016.7758796

Terahertz spectroscopy of topological insulator Sb₂Se₃ and its ultrafast nonequilibrium carrier dynamics. / Park, Jaehun; Kim, Tae Hyeon; Jeong, Kwangsik; Choi, Hyejin; Jung, Seonghoon; Cho, Mann Ho.

41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. IEEE Computer Society, 2016. 7758796 (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2016-November).

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

TY - GEN

T1 - Terahertz spectroscopy of topological insulator Sb2Se3 and its ultrafast nonequilibrium carrier dynamics

AU - Park, Jaehun

AU - Kim, Tae Hyeon

AU - Jeong, Kwangsik

AU - Choi, Hyejin

AU - Jung, Seonghoon

AU - Cho, Mann Ho

PY - 2016/11/28

Y1 - 2016/11/28

N2 - Tuning the band structure of a topological insulator is of interest for developing electronic devices or superconducting devices. Here we report the strain-dependent results for Bi2Se3 films of various thicknesses that are grown via a self-organized ordering process. From the UV photoemission/inverse photoemission spectroscopy (UPS/IPES) results, ab initio calculations and THz-TDS data, significant changes of the Fermi level and band gap were observed.

AB - Tuning the band structure of a topological insulator is of interest for developing electronic devices or superconducting devices. Here we report the strain-dependent results for Bi2Se3 films of various thicknesses that are grown via a self-organized ordering process. From the UV photoemission/inverse photoemission spectroscopy (UPS/IPES) results, ab initio calculations and THz-TDS data, significant changes of the Fermi level and band gap were observed.

UR - http://www.scopus.com/inward/record.url?scp=85006106093&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85006106093&partnerID=8YFLogxK

U2 - 10.1109/IRMMW-THz.2016.7758796

DO - 10.1109/IRMMW-THz.2016.7758796

M3 - Conference contribution

AN - SCOPUS:85006106093

T3 - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

BT - 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016

PB - IEEE Computer Society

T2 - 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016

Y2 - 25 September 2016 through 30 September 2016

ER -

Park J, Kim TH, Jeong K, Choi H, Jung S, Cho MH. Terahertz spectroscopy of topological insulator Sb₂Se₃ and its ultrafast nonequilibrium carrier dynamics. In 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. IEEE Computer Society. 2016. 7758796. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz). https://doi.org/10.1109/IRMMW-THz.2016.7758796