Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe
Abstract While polymorphism is prevalent in crystalline solids, polyamorphism draws increasing interest in various types of amorphous solids. Recent studies suggested that supercooling of liquid phase-change materials (PCMs) induces Peierls-like distortions in their local structures, underlying thei...
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Nature Portfolio
2023-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43457-y |
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| author | Tomoki Fujita Yuhan Chen Yoshio Kono Seiya Takahashi Hidetaka Kasai Davide Campi Marco Bernasconi Koji Ohara Hirokatsu Yumoto Takahisa Koyama Hiroshi Yamazaki Yasunori Senba Haruhiko Ohashi Ichiro Inoue Yujiro Hayashi Makina Yabashi Eiji Nishibori Riccardo Mazzarello Shuai Wei |
| author_facet | Tomoki Fujita Yuhan Chen Yoshio Kono Seiya Takahashi Hidetaka Kasai Davide Campi Marco Bernasconi Koji Ohara Hirokatsu Yumoto Takahisa Koyama Hiroshi Yamazaki Yasunori Senba Haruhiko Ohashi Ichiro Inoue Yujiro Hayashi Makina Yabashi Eiji Nishibori Riccardo Mazzarello Shuai Wei |
| author_sort | Tomoki Fujita |
| collection | DOAJ |
| description | Abstract While polymorphism is prevalent in crystalline solids, polyamorphism draws increasing interest in various types of amorphous solids. Recent studies suggested that supercooling of liquid phase-change materials (PCMs) induces Peierls-like distortions in their local structures, underlying their liquid-liquid transitions before vitrification. However, the mechanism of how the vitrified phases undergo a possible polyamorphic transition remains elusive. Here, using high-energy synchrotron X-rays, we can access the precise pair distribution functions under high pressure and provide clear evidence that pressure can reverse the Peierls-like distortions, eliciting a polyamorphic transition in GeTe and GeSe. Combined with simulations based on machine-learned-neural-network potential, our structural analysis reveals a high-pressure state characterized by diminished Peierls-like distortion, greater coherence length, reduced compressibility, and a narrowing bandgap. Our finding underscores the crucial role of Peierls-like distortions in amorphous octahedral systems including PCMs. These distortions can be controlled through pressure and composition, offering potentials for designing properties in PCM-based devices. |
| format | Article |
| id | doaj-art-5277a37d57cc4841b9cbb4dbff112cb4 |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-5277a37d57cc4841b9cbb4dbff112cb42025-08-20T02:59:57ZengNature PortfolioNature Communications2041-17232023-12-0114111010.1038/s41467-023-43457-yPressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSeTomoki Fujita0Yuhan Chen1Yoshio Kono2Seiya Takahashi3Hidetaka Kasai4Davide Campi5Marco Bernasconi6Koji Ohara7Hirokatsu Yumoto8Takahisa Koyama9Hiroshi Yamazaki10Yasunori Senba11Haruhiko Ohashi12Ichiro Inoue13Yujiro Hayashi14Makina Yabashi15Eiji Nishibori16Riccardo Mazzarello17Shuai Wei18Department of Chemistry, Aarhus UniversityDepartment of Physics, Sapienza University of RomeGeodynamics Research Center, Ehime UniversityDepartment of Physics, Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of TsukubaDepartment of Physics, Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of TsukubaDepartment of Materials Science, University of Milano-BicoccaDepartment of Materials Science, University of Milano-BicoccaFaculty of Materials for Energy, Shimane UniversityJapan Synchrotron Radiation Research InstituteJapan Synchrotron Radiation Research InstituteJapan Synchrotron Radiation Research InstituteJapan Synchrotron Radiation Research InstituteJapan Synchrotron Radiation Research InstituteRIKEN SPring-8 CenterRIKEN SPring-8 CenterRIKEN SPring-8 CenterDepartment of Physics, Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of TsukubaDepartment of Physics, Sapienza University of RomeDepartment of Chemistry, Aarhus UniversityAbstract While polymorphism is prevalent in crystalline solids, polyamorphism draws increasing interest in various types of amorphous solids. Recent studies suggested that supercooling of liquid phase-change materials (PCMs) induces Peierls-like distortions in their local structures, underlying their liquid-liquid transitions before vitrification. However, the mechanism of how the vitrified phases undergo a possible polyamorphic transition remains elusive. Here, using high-energy synchrotron X-rays, we can access the precise pair distribution functions under high pressure and provide clear evidence that pressure can reverse the Peierls-like distortions, eliciting a polyamorphic transition in GeTe and GeSe. Combined with simulations based on machine-learned-neural-network potential, our structural analysis reveals a high-pressure state characterized by diminished Peierls-like distortion, greater coherence length, reduced compressibility, and a narrowing bandgap. Our finding underscores the crucial role of Peierls-like distortions in amorphous octahedral systems including PCMs. These distortions can be controlled through pressure and composition, offering potentials for designing properties in PCM-based devices.https://doi.org/10.1038/s41467-023-43457-y |
| spellingShingle | Tomoki Fujita Yuhan Chen Yoshio Kono Seiya Takahashi Hidetaka Kasai Davide Campi Marco Bernasconi Koji Ohara Hirokatsu Yumoto Takahisa Koyama Hiroshi Yamazaki Yasunori Senba Haruhiko Ohashi Ichiro Inoue Yujiro Hayashi Makina Yabashi Eiji Nishibori Riccardo Mazzarello Shuai Wei Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe Nature Communications |
| title | Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe |
| title_full | Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe |
| title_fullStr | Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe |
| title_full_unstemmed | Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe |
| title_short | Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe |
| title_sort | pressure induced reversal of peierls like distortions elicits the polyamorphic transition in gete and gese |
| url | https://doi.org/10.1038/s41467-023-43457-y |
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