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Title: Coherent control of asymmetric spintronic terahertz emission from two-dimensional hybrid metal halides

Abstract

Next-generation terahertz (THz) sources demand lightweight, low-cost, defect-tolerant, and robust components with synergistic, tunable capabilities. However, a paucity of materials systems simultaneously possessing these desirable attributes and functionalities has made device realization difficult. Here we report the observation of asymmetric spintronic-THz radiation in Two-Dimensional Hybrid Metal Halides (2D-HMH) interfaced with a ferromagnetic metal, produced by ultrafast spin current under femtosecond laser excitation. The generated THz radiation exhibits an asymmetric intensity toward forward and backward emission direction whose directionality can be mutually controlled by the direction of applied magnetic field and linear polarization of the laser pulse. Our work demonstrates the capability for the coherent control of THz emission from 2D-HMHs, enabling their promising applications on the ultrafast timescale as solution-processed material candidates for future THz emitters.

Authors:
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Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
OSTI Identifier:
1823171
Alternate Identifier(s):
OSTI ID: 1827090; OSTI ID: 1840702
Report Number(s):
IS-J-10,609
Journal ID: ISSN 2041-1723; 5744; PII: 26011
Grant/Contract Number:  
SC0012509; AC02-06CH11357; AC02-07CH11358
Resource Type:
Published Article
Journal Name:
Nature Communications
Additional Journal Information:
Journal Name: Nature Communications Journal Volume: 12 Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United Kingdom
Language:
English
Subject:
36 MATERIALS SCIENCE; Electronic properties and materials; Spintronics; Terahertz optics; Two-dimensional materials

Citation Formats

Cong, Kankan, Vetter, Eric, Yan, Liang, Li, Yi, Zhang, Qi, Xiong, Yuzan, Qu, Hongwei, Schaller, Richard D., Hoffmann, Axel, Kemper, Alexander F., Yao, Yongxin, Wang, Jigang, You, Wei, Wen, Haidan, Zhang, Wei, and Sun, Dali. Coherent control of asymmetric spintronic terahertz emission from two-dimensional hybrid metal halides. United Kingdom: N. p., 2021. Web. doi:10.1038/s41467-021-26011-6.
Cong, Kankan, Vetter, Eric, Yan, Liang, Li, Yi, Zhang, Qi, Xiong, Yuzan, Qu, Hongwei, Schaller, Richard D., Hoffmann, Axel, Kemper, Alexander F., Yao, Yongxin, Wang, Jigang, You, Wei, Wen, Haidan, Zhang, Wei, & Sun, Dali. Coherent control of asymmetric spintronic terahertz emission from two-dimensional hybrid metal halides. United Kingdom. https://doi.org/10.1038/s41467-021-26011-6
Cong, Kankan, Vetter, Eric, Yan, Liang, Li, Yi, Zhang, Qi, Xiong, Yuzan, Qu, Hongwei, Schaller, Richard D., Hoffmann, Axel, Kemper, Alexander F., Yao, Yongxin, Wang, Jigang, You, Wei, Wen, Haidan, Zhang, Wei, and Sun, Dali. Thu . "Coherent control of asymmetric spintronic terahertz emission from two-dimensional hybrid metal halides". United Kingdom. https://doi.org/10.1038/s41467-021-26011-6.
@article{osti_1823171,
title = {Coherent control of asymmetric spintronic terahertz emission from two-dimensional hybrid metal halides},
author = {Cong, Kankan and Vetter, Eric and Yan, Liang and Li, Yi and Zhang, Qi and Xiong, Yuzan and Qu, Hongwei and Schaller, Richard D. and Hoffmann, Axel and Kemper, Alexander F. and Yao, Yongxin and Wang, Jigang and You, Wei and Wen, Haidan and Zhang, Wei and Sun, Dali},
abstractNote = {Next-generation terahertz (THz) sources demand lightweight, low-cost, defect-tolerant, and robust components with synergistic, tunable capabilities. However, a paucity of materials systems simultaneously possessing these desirable attributes and functionalities has made device realization difficult. Here we report the observation of asymmetric spintronic-THz radiation in Two-Dimensional Hybrid Metal Halides (2D-HMH) interfaced with a ferromagnetic metal, produced by ultrafast spin current under femtosecond laser excitation. The generated THz radiation exhibits an asymmetric intensity toward forward and backward emission direction whose directionality can be mutually controlled by the direction of applied magnetic field and linear polarization of the laser pulse. Our work demonstrates the capability for the coherent control of THz emission from 2D-HMHs, enabling their promising applications on the ultrafast timescale as solution-processed material candidates for future THz emitters.},
doi = {10.1038/s41467-021-26011-6},
journal = {Nature Communications},
number = 1,
volume = 12,
place = {United Kingdom},
year = {Thu Sep 30 00:00:00 EDT 2021},
month = {Thu Sep 30 00:00:00 EDT 2021}
}

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