Terahertz optics-driven phase transition in two-dimensional multiferroics

Abstract Displacive martensitic phase transition is potentially promising in semiconductor-based data storage applications with fast switching speed. In addition to traditional phase transition materials, the recently discovered two-dimensional ferroic materials are receiving a lot of attention owin...

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Autores principales:	Jian Zhou, Shunhong Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/58748212d4674109b38d3983c5c56d2a
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spelling	oai:doaj.org-article:58748212d4674109b38d3983c5c56d2a2021-12-02T13:44:00ZTerahertz optics-driven phase transition in two-dimensional multiferroics10.1038/s41699-020-00189-72397-7132https://doaj.org/article/58748212d4674109b38d3983c5c56d2a2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41699-020-00189-7https://doaj.org/toc/2397-7132Abstract Displacive martensitic phase transition is potentially promising in semiconductor-based data storage applications with fast switching speed. In addition to traditional phase transition materials, the recently discovered two-dimensional ferroic materials are receiving a lot of attention owing to their fast ferroic switching dynamics, which could tremendously boost data storage density and enhance read/write speed. In this study, we propose that a terahertz laser with an intermediate intensity and selected frequency can trigger ferroic order switching in two-dimensional multiferroics, which is a damage-free noncontacting approach. Through first-principles calculations, we theoretically and computationally investigate optically induced electronic, phononic, and mechanical responses of two experimentally fabricated multiferroic (with both ferroelastic and ferroelectric) materials, β-GeSe and α-SnTe monolayer. We show that the relative stability of different orientation variants can be effectively manipulated via the polarization direction of the terahertz laser, which is selectively and strongly coupled with the transverse optical phonon modes. The transition from one orientation variant to another can be barrierless, indicating ultrafast transition kinetics and the conventional nucleation-growth phase transition process can be avoidable.Jian ZhouShunhong ZhangNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ChemistryQD1-999ENnpj 2D Materials and Applications, Vol 5, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999 Jian Zhou Shunhong Zhang Terahertz optics-driven phase transition in two-dimensional multiferroics
description	Abstract Displacive martensitic phase transition is potentially promising in semiconductor-based data storage applications with fast switching speed. In addition to traditional phase transition materials, the recently discovered two-dimensional ferroic materials are receiving a lot of attention owing to their fast ferroic switching dynamics, which could tremendously boost data storage density and enhance read/write speed. In this study, we propose that a terahertz laser with an intermediate intensity and selected frequency can trigger ferroic order switching in two-dimensional multiferroics, which is a damage-free noncontacting approach. Through first-principles calculations, we theoretically and computationally investigate optically induced electronic, phononic, and mechanical responses of two experimentally fabricated multiferroic (with both ferroelastic and ferroelectric) materials, β-GeSe and α-SnTe monolayer. We show that the relative stability of different orientation variants can be effectively manipulated via the polarization direction of the terahertz laser, which is selectively and strongly coupled with the transverse optical phonon modes. The transition from one orientation variant to another can be barrierless, indicating ultrafast transition kinetics and the conventional nucleation-growth phase transition process can be avoidable.
format	article
author	Jian Zhou Shunhong Zhang
author_facet	Jian Zhou Shunhong Zhang
author_sort	Jian Zhou
title	Terahertz optics-driven phase transition in two-dimensional multiferroics
title_short	Terahertz optics-driven phase transition in two-dimensional multiferroics
title_full	Terahertz optics-driven phase transition in two-dimensional multiferroics
title_fullStr	Terahertz optics-driven phase transition in two-dimensional multiferroics
title_full_unstemmed	Terahertz optics-driven phase transition in two-dimensional multiferroics
title_sort	terahertz optics-driven phase transition in two-dimensional multiferroics
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/58748212d4674109b38d3983c5c56d2a
work_keys_str_mv	AT jianzhou terahertzopticsdrivenphasetransitionintwodimensionalmultiferroics AT shunhongzhang terahertzopticsdrivenphasetransitionintwodimensionalmultiferroics
_version_	1718392497405689856

Terahertz optics-driven phase transition in two-dimensional multiferroics

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