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Superionicity, disorder, and bandgap closure in dense hydrogen chloride

文献类型：期刊论文

作者Binns, Jack1,6; Hermann, Andreas2,3; Pena-Alvarez, Miriam2,3; Donnelly, Mary-Ellen1; Wang, Mengnan1; Kawaguchi, Saori Imada4; Gregoryanz, Eugene1,2,3,5; Howie, Ross T.1; Dalladay-Simpson, Philip1
刊名SCIENCE ADVANCES
出版日期2021-09-01
卷号7
ISSN号2375-2548
DOI10.1126/sciadv.abi9507
通讯作者Hermann, Andreas(a.hermann@ed.ac.uk) ; Dalladay-Simpson, Philip(philip.dalladay-simpson@hpstar.ac.cn)
英文摘要Hydrogen bond networks play a crucial role in biomolecules and molecular materials such as ices. How these networks react to pressure directs their properties at extreme conditions. We have studied one of the simplest hydrogen bond formers, hydrogen chloride, from crystallization to metallization, covering a pressure range of more than 2.5 million atmospheres. Following hydrogen bond symmetrization, we identify a previously unknown phase by the appearance of new Raman modes and changes to x-ray diffraction patterns that contradict previous predictions. On further compression, a broad Raman band supersedes the well-defined excitations of phase V, despite retaining a crystalline chlorine substructure. We propose that this mode has its origin in proton (H+) mobility and disorder. Above 100 GPa, the optical bandgap closes linearly with extrapolated metallization at 240(10) GPa. Our findings suggest that proton dynamics can drive changes in these networks even at very high densities.
WOS关键词X-RAY-DIFFRACTION ; BOND SYMMETRIZATION ; CRYSTAL-STRUCTURE ; PHASE-TRANSITION ; AMMONIA ; RAMAN ; WATER ; ICE ; SYSTEM
资助项目1000 Young Talents awards ; Top 1000 Talents award ; National Natural Science Foundation of China (NSFC)[11974034] ; European Research Council (ERC)[695527] ; FLF Award[MR/T043733/1] ; EPSRC[EP/P022561/1] ; EPSRC[EP/P020194]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000695711400033
出版者AMER ASSOC ADVANCEMENT SCIENCE
资助机构1000 Young Talents awards ; Top 1000 Talents award ; National Natural Science Foundation of China (NSFC) ; European Research Council (ERC) ; FLF Award ; EPSRC
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/125351]  
专题中国科学院合肥物质科学研究院
通讯作者Hermann, Andreas; Dalladay-Simpson, Philip
作者单位1.Ctr High Pressure Sci & Technol Adv Res, 1690 Cailun Rd, Shanghai 201203, Peoples R China
2.Univ Edinburgh, Sch Phys, Edinburgh EH9 3JZ, Midlothian, Scotland
3.Univ Edinburgh, Ctr Sci Extreme Condit, Edinburgh EH9 3JZ, Midlothian, Scotland
4.Japan Synchrotron Radiat Res Inst JASRI, Sayo, Hyogo 6795198, Japan
5.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei, Peoples R China
6.RMIT Univ, Sch Sci, Melbourne, Vic 3000, Australia
推荐引用方式
GB/T 7714		 Binns, Jack,Hermann, Andreas,Pena-Alvarez, Miriam,et al. Superionicity, disorder, and bandgap closure in dense hydrogen chloride[J]. SCIENCE ADVANCES,2021,7.
APA Binns, Jack.,Hermann, Andreas.,Pena-Alvarez, Miriam.,Donnelly, Mary-Ellen.,Wang, Mengnan.,...&Dalladay-Simpson, Philip.(2021).Superionicity, disorder, and bandgap closure in dense hydrogen chloride.SCIENCE ADVANCES,7.
MLA Binns, Jack,et al."Superionicity, disorder, and bandgap closure in dense hydrogen chloride".SCIENCE ADVANCES 7(2021).

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来源：合肥物质科学研究院

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