$Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}$
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Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}

The recent development of ultrashort laser pulses allows for optical control of structural and electronic properties of complex quantum materials. The layered transition-metal dichalcogenide MoTe_{2}, which can crystallize into several different structures with distinct topological and electronic pr...

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Autores principales:	M. Y. Zhang, Z. X. Wang, Y. N. Li, L. Y. Shi, D. Wu, T. Lin, S. J. Zhang, Y. Q. Liu, Q. M. Liu, J. Wang, T. Dong, N. L. Wang
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2019
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/f0bfc4ab9c5b44fabfea6a374b4f5897
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spelling	oai:doaj.org-article:f0bfc4ab9c5b44fabfea6a374b4f58972021-12-02T13:22:14ZLight-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}10.1103/PhysRevX.9.0210362160-3308https://doaj.org/article/f0bfc4ab9c5b44fabfea6a374b4f58972019-05-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.9.021036http://doi.org/10.1103/PhysRevX.9.021036https://doaj.org/toc/2160-3308The recent development of ultrashort laser pulses allows for optical control of structural and electronic properties of complex quantum materials. The layered transition-metal dichalcogenide MoTe_{2}, which can crystallize into several different structures with distinct topological and electronic properties, provides possibilities to control or switch between different phases. In this study, we report a photoinduced subpicosecond structural transition between the type-II Weyl semimetal phase and normal-semimetal phase in bulk crystalline MoTe_{2} by using ultrafast pump-probe and time-resolved second-harmonic-generation spectroscopy. The phase transition is most clearly characterized by the dramatic change of the shear oscillation mode and the intensity loss of second-harmonic generation. This work opens up new possibilities for ultrafast manipulation of the topological properties of solids, enabling potentially practical applications for a topological switch device with ultrafast excitations.M. Y. ZhangZ. X. WangY. N. LiL. Y. ShiD. WuT. LinS. J. ZhangY. Q. LiuQ. M. LiuJ. WangT. DongN. L. WangAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 9, Iss 2, p 021036 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 M. Y. Zhang Z. X. Wang Y. N. Li L. Y. Shi D. Wu T. Lin S. J. Zhang Y. Q. Liu Q. M. Liu J. Wang T. Dong N. L. Wang Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}
description	The recent development of ultrashort laser pulses allows for optical control of structural and electronic properties of complex quantum materials. The layered transition-metal dichalcogenide MoTe_{2}, which can crystallize into several different structures with distinct topological and electronic properties, provides possibilities to control or switch between different phases. In this study, we report a photoinduced subpicosecond structural transition between the type-II Weyl semimetal phase and normal-semimetal phase in bulk crystalline MoTe_{2} by using ultrafast pump-probe and time-resolved second-harmonic-generation spectroscopy. The phase transition is most clearly characterized by the dramatic change of the shear oscillation mode and the intensity loss of second-harmonic generation. This work opens up new possibilities for ultrafast manipulation of the topological properties of solids, enabling potentially practical applications for a topological switch device with ultrafast excitations.
format	article
author	M. Y. Zhang Z. X. Wang Y. N. Li L. Y. Shi D. Wu T. Lin S. J. Zhang Y. Q. Liu Q. M. Liu J. Wang T. Dong N. L. Wang
author_facet	M. Y. Zhang Z. X. Wang Y. N. Li L. Y. Shi D. Wu T. Lin S. J. Zhang Y. Q. Liu Q. M. Liu J. Wang T. Dong N. L. Wang
author_sort	M. Y. Zhang
title	Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}
title_short	Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}
title_full	Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}
title_fullStr	Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}
title_full_unstemmed	Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}
title_sort	light-induced subpicosecond lattice symmetry switch in mote_{2}
publisher	American Physical Society
publishDate	2019
url	https://doaj.org/article/f0bfc4ab9c5b44fabfea6a374b4f5897
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_version_	1718393187560587264

Light-Induced Subpicosecond Lattice Symmetry Switch in MoTe_{2}

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