Helicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi2

Helicity-dependent ultrafast spin current generated by circularly polarized photons in topological materials holds the crux to many technological improvements, such as quantum communications, on-chip communication processing and storage. Here, we present the manipulation of helicity-dependent terahe...

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Autores principales:	Tong Mingyu, Hu Yuze, Xie Xiangnan, Zhu Xiegang, Wang Zhenyu, Cheng Xiang'ai, Jiang Tian
Formato:	article
Lenguaje:	EN
Publicado:	Institue of Optics and Electronics, Chinese Academy of Sciences 2020
Materias:	terahertz spin photocurrent nodal-line semimetal topological material Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/d1f6f5d9e83843909939d19148b6743c
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spelling	oai:doaj.org-article:d1f6f5d9e83843909939d19148b6743c2021-11-10T09:40:56ZHelicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi22096-457910.29026/oea.2020.200023https://doaj.org/article/d1f6f5d9e83843909939d19148b6743c2020-12-01T00:00:00Zhttp://www.oejournal.org/article/doi/10.29026/oea.2020.200023https://doaj.org/toc/2096-4579Helicity-dependent ultrafast spin current generated by circularly polarized photons in topological materials holds the crux to many technological improvements, such as quantum communications, on-chip communication processing and storage. Here, we present the manipulation of helicity-dependent terahertz emission generated in a nodal line semimetal candidate Mg3Bi2 by using photon polarization states. The terahertz emission is mainly ascribed to the helicity-dependent photocurrent that is originated from circular photogalvanic effects, and the helicity-independent photocurrent that is attributed to linear photogalvanic effect. Our work will inspire more explorations into novel nodal line semimetals and open up new opportunities for developing ultrafast optoelectronics in the topological system.Tong MingyuHu YuzeXie XiangnanZhu XiegangWang ZhenyuCheng Xiang'aiJiang TianInstitue of Optics and Electronics, Chinese Academy of Sciencesarticleterahertzspin photocurrentnodal-line semimetaltopological materialOptics. LightQC350-467ENOpto-Electronic Advances, Vol 3, Iss 12, Pp 200023-1-200023-8 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	terahertz spin photocurrent nodal-line semimetal topological material Optics. Light QC350-467
spellingShingle	terahertz spin photocurrent nodal-line semimetal topological material Optics. Light QC350-467 Tong Mingyu Hu Yuze Xie Xiangnan Zhu Xiegang Wang Zhenyu Cheng Xiang'ai Jiang Tian Helicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi2
description	Helicity-dependent ultrafast spin current generated by circularly polarized photons in topological materials holds the crux to many technological improvements, such as quantum communications, on-chip communication processing and storage. Here, we present the manipulation of helicity-dependent terahertz emission generated in a nodal line semimetal candidate Mg3Bi2 by using photon polarization states. The terahertz emission is mainly ascribed to the helicity-dependent photocurrent that is originated from circular photogalvanic effects, and the helicity-independent photocurrent that is attributed to linear photogalvanic effect. Our work will inspire more explorations into novel nodal line semimetals and open up new opportunities for developing ultrafast optoelectronics in the topological system.
format	article
author	Tong Mingyu Hu Yuze Xie Xiangnan Zhu Xiegang Wang Zhenyu Cheng Xiang'ai Jiang Tian
author_facet	Tong Mingyu Hu Yuze Xie Xiangnan Zhu Xiegang Wang Zhenyu Cheng Xiang'ai Jiang Tian
author_sort	Tong Mingyu
title	Helicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi2
title_short	Helicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi2
title_full	Helicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi2
title_fullStr	Helicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi2
title_full_unstemmed	Helicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi2
title_sort	helicity-dependent thz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate mg3bi2
publisher	Institue of Optics and Electronics, Chinese Academy of Sciences
publishDate	2020
url	https://doaj.org/article/d1f6f5d9e83843909939d19148b6743c
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_version_	1718440141369901056

Helicity-dependent THz emission induced by ultrafast spin photocurrent in nodal-line semimetal candidate Mg3Bi2

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