Ultrafast manipulation of collective modes via chiral fermions in a charge density wave Weyl semimetal

L. Cheng; Z. X. Wei; Y. G. Yao; J. Qi

Ultrafast manipulation of collective modes via chiral fermions in a charge density wave Weyl semimetal

L. Cheng
, Z. X. Wei
, Y. G. Yao
, J. Qi^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

In Weyl semimetal (TaSe4)2I, excitation of femtosecond optical pulses induces terahertz emission in the CDW state, arising from contributions of ultrafast photocurrent and various collective modes. Due to topologically non-trivial linear bands, we discover that properties of the collective modes at low temperatures can be manipulated with an ultrafast manner.

Original language	English
Pages (from-to)	453-454
Number of pages	2
Journal	International Conference on Metamaterials, Photonic Crystals and Plasmonics
Publication status	Published - 2025
Externally published	Yes
Event	15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2025 - Malaga, Spain Duration: 22 Jul 2025 → 25 Jul 2025

Cite this

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title = "Ultrafast manipulation of collective modes via chiral fermions in a charge density wave Weyl semimetal",

abstract = "In Weyl semimetal (TaSe4)2I, excitation of femtosecond optical pulses induces terahertz emission in the CDW state, arising from contributions of ultrafast photocurrent and various collective modes. Due to topologically non-trivial linear bands, we discover that properties of the collective modes at low temperatures can be manipulated with an ultrafast manner.",

author = "L. Cheng and Wei, \{Z. X.\} and Yao, \{Y. G.\} and J. Qi",

note = "Publisher Copyright: {\textcopyright} 2025, META Conference. All rights reserved.; 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2025 ; Conference date: 22-07-2025 Through 25-07-2025",

year = "2025",

language = "English",

pages = "453--454",

journal = "International Conference on Metamaterials, Photonic Crystals and Plasmonics",

issn = "2429-1390",

publisher = "META Conference",

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TY - JOUR

T1 - Ultrafast manipulation of collective modes via chiral fermions in a charge density wave Weyl semimetal

AU - Cheng, L.

AU - Wei, Z. X.

AU - Yao, Y. G.

AU - Qi, J.

PY - 2025

Y1 - 2025

N2 - In Weyl semimetal (TaSe4)2I, excitation of femtosecond optical pulses induces terahertz emission in the CDW state, arising from contributions of ultrafast photocurrent and various collective modes. Due to topologically non-trivial linear bands, we discover that properties of the collective modes at low temperatures can be manipulated with an ultrafast manner.

AB - In Weyl semimetal (TaSe4)2I, excitation of femtosecond optical pulses induces terahertz emission in the CDW state, arising from contributions of ultrafast photocurrent and various collective modes. Due to topologically non-trivial linear bands, we discover that properties of the collective modes at low temperatures can be manipulated with an ultrafast manner.

UR - https://www.scopus.com/pages/publications/105014459587

M3 - Conference article

AN - SCOPUS:105014459587

SN - 2429-1390

SP - 453

EP - 454

JO - International Conference on Metamaterials, Photonic Crystals and Plasmonics

JF - International Conference on Metamaterials, Photonic Crystals and Plasmonics

T2 - 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2025

Y2 - 22 July 2025 through 25 July 2025

ER -

Ultrafast manipulation of collective modes via chiral fermions in a charge density wave Weyl semimetal

Abstract

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