Helicity-dependent terahertz emission spectroscopy of topological insulator S b                         2                          T e                         3                          thin films

Chien Ming Tu; Yi Cheng Chen; Ping Huang; Pei Yu Chuang; Ming Yu Lin; Cheng Maw Cheng; Jiunn Yuan Lin; Jenh Yih Juang; Kaung Hsiung Wu; Jung Chun A. Huang; Way Faung Pong; Takayoshi Kobayashi; Chih Wei Luo

doi:10.1103/PhysRevB.96.195407

Helicity-dependent terahertz emission spectroscopy of topological insulator S b ₂ T e ₃ thin films

Chien Ming Tu, Yi Cheng Chen, Ping Huang, Pei Yu Chuang, Ming Yu Lin, Cheng Maw Cheng, Jiunn Yuan Lin, Jenh Yih Juang, Kaung Hsiung Wu, Jung Chun A. Huang, Way Faung Pong, Takayoshi Kobayashi, Chih Wei Luo

研究成果: Article › 同行評審

8 引文斯高帕斯（Scopus）

摘要

We report on helicity-dependent terahertz emissions that originate from the helicity-dependent photocurrents in topological insulator Sb2Te3 thin films due to ultrafast optical excitation. The polarity of the emitted terahertz radiation is controlled by both the incident angle and the helicity of optical pulses. Using an unprecedented decomposition-recombination procedure in the time domain, the signals of the Dirac fermions are fully separated from bulk contributions. These results provide insights into the optical coupling of topological surface states and open up opportunities for applying helicity-dependent terahertz emission spectroscopy in spintronics.

原文	English
文章編號	195407
期刊	Physical Review B
卷	96
發行號	19
DOIs	https://doi.org/10.1103/PhysRevB.96.195407
出版狀態	Published - 2017 十一月 6

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.96.195407

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Tu, C. M., Chen, Y. C., Huang, P., Chuang, P. Y., Lin, M. Y., Cheng, C. M., Lin, J. Y., Juang, J. Y., Wu, K. H., Huang, J. C. A., Pong, W. F., Kobayashi, T., & Luo, C. W. (2017). Helicity-dependent terahertz emission spectroscopy of topological insulator S b ₂ T e ₃ thin films Physical Review B, 96(19), [195407]. https://doi.org/10.1103/PhysRevB.96.195407

Tu, Chien Ming ; Chen, Yi Cheng ; Huang, Ping ; Chuang, Pei Yu ; Lin, Ming Yu ; Cheng, Cheng Maw ; Lin, Jiunn Yuan ; Juang, Jenh Yih ; Wu, Kaung Hsiung ; Huang, Jung Chun A. ; Pong, Way Faung ; Kobayashi, Takayoshi ; Luo, Chih Wei. / Helicity-dependent terahertz emission spectroscopy of topological insulator S b ₂ T e ₃ thin films 於: Physical Review B. 2017 ; 卷 96, 編號 19.

@article{ba4dc172222d45229beba36d7431434a,

title = " Helicity-dependent terahertz emission spectroscopy of topological insulator S b 2 T e 3 thin films ",

abstract = "We report on helicity-dependent terahertz emissions that originate from the helicity-dependent photocurrents in topological insulator Sb2Te3 thin films due to ultrafast optical excitation. The polarity of the emitted terahertz radiation is controlled by both the incident angle and the helicity of optical pulses. Using an unprecedented decomposition-recombination procedure in the time domain, the signals of the Dirac fermions are fully separated from bulk contributions. These results provide insights into the optical coupling of topological surface states and open up opportunities for applying helicity-dependent terahertz emission spectroscopy in spintronics.",

author = "Tu, {Chien Ming} and Chen, {Yi Cheng} and Ping Huang and Chuang, {Pei Yu} and Lin, {Ming Yu} and Cheng, {Cheng Maw} and Lin, {Jiunn Yuan} and Juang, {Jenh Yih} and Wu, {Kaung Hsiung} and Huang, {Jung Chun A.} and Pong, {Way Faung} and Takayoshi Kobayashi and Luo, {Chih Wei}",

note = "Funding Information: This work was supported by Ministry of Science and Technology, Taiwan (Grants No. 103-2119-M-009-004-MY3, No. 103-2628-M-009-002-MY3, and No. 106-2628-M-009 -003-MY3) and Ministry of Education through the Aiming for the Top University Program at National Chiao Tung University. Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = nov,

day = "6",

doi = "10.1103/PhysRevB.96.195407",

language = "English",

volume = "96",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "19",

}

Tu, CM, Chen, YC, Huang, P, Chuang, PY, Lin, MY, Cheng, CM, Lin, JY, Juang, JY, Wu, KH, Huang, JCA, Pong, WF, Kobayashi, T & Luo, CW 2017, ' Helicity-dependent terahertz emission spectroscopy of topological insulator S b ₂ T e ₃ thin films ', Physical Review B, 卷 96, 編號 19, 195407. https://doi.org/10.1103/PhysRevB.96.195407

Helicity-dependent terahertz emission spectroscopy of topological insulator S b ₂ T e ₃ thin films . / Tu, Chien Ming; Chen, Yi Cheng; Huang, Ping; Chuang, Pei Yu; Lin, Ming Yu; Cheng, Cheng Maw; Lin, Jiunn Yuan; Juang, Jenh Yih; Wu, Kaung Hsiung; Huang, Jung Chun A.; Pong, Way Faung; Kobayashi, Takayoshi; Luo, Chih Wei.

於: Physical Review B, 卷 96, 編號 19, 195407, 06.11.2017.

研究成果: Article › 同行評審

TY - JOUR

T1 - Helicity-dependent terahertz emission spectroscopy of topological insulator S b 2 T e 3 thin films

AU - Tu, Chien Ming

AU - Chen, Yi Cheng

AU - Huang, Ping

AU - Chuang, Pei Yu

AU - Lin, Ming Yu

AU - Cheng, Cheng Maw

AU - Lin, Jiunn Yuan

AU - Juang, Jenh Yih

AU - Wu, Kaung Hsiung

AU - Huang, Jung Chun A.

AU - Pong, Way Faung

AU - Kobayashi, Takayoshi

AU - Luo, Chih Wei

N1 - Funding Information: This work was supported by Ministry of Science and Technology, Taiwan (Grants No. 103-2119-M-009-004-MY3, No. 103-2628-M-009-002-MY3, and No. 106-2628-M-009 -003-MY3) and Ministry of Education through the Aiming for the Top University Program at National Chiao Tung University. Publisher Copyright: © 2017 American Physical Society.

PY - 2017/11/6

Y1 - 2017/11/6

N2 - We report on helicity-dependent terahertz emissions that originate from the helicity-dependent photocurrents in topological insulator Sb2Te3 thin films due to ultrafast optical excitation. The polarity of the emitted terahertz radiation is controlled by both the incident angle and the helicity of optical pulses. Using an unprecedented decomposition-recombination procedure in the time domain, the signals of the Dirac fermions are fully separated from bulk contributions. These results provide insights into the optical coupling of topological surface states and open up opportunities for applying helicity-dependent terahertz emission spectroscopy in spintronics.

AB - We report on helicity-dependent terahertz emissions that originate from the helicity-dependent photocurrents in topological insulator Sb2Te3 thin films due to ultrafast optical excitation. The polarity of the emitted terahertz radiation is controlled by both the incident angle and the helicity of optical pulses. Using an unprecedented decomposition-recombination procedure in the time domain, the signals of the Dirac fermions are fully separated from bulk contributions. These results provide insights into the optical coupling of topological surface states and open up opportunities for applying helicity-dependent terahertz emission spectroscopy in spintronics.

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DO - 10.1103/PhysRevB.96.195407

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VL - 96

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

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M1 - 195407

ER -

Tu CM, Chen YC, Huang P, Chuang PY, Lin MY, Cheng CM 等. Helicity-dependent terahertz emission spectroscopy of topological insulator S b ₂ T e ₃ thin films Physical Review B. 2017 11月 6;96(19). 195407. https://doi.org/10.1103/PhysRevB.96.195407