Silica-water superstructure and one-dimensional superionic conduit in Earth's mantle
文献类型：期刊论文
| 作者 | Li, Junwei3; Lin, Yanhao3; Meier, Thomas3; Liu, Zhipan4; Yang, Wei1; Mao, Ho-kwang3; Zhu, Shengcai5; Hu, Qingyang2,3 |
| 刊名 | SCIENCE ADVANCES
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 9期号:35页码:11 |
| ISSN号 | 2375-2548 |
| DOI | 10.1126/sciadv.adh3784 |
| 英文摘要 | Water in Earth's deep interior is predicted to be hydroxyl (OH-) stored in nominally anhydrous minerals, profoundly modulating both structure and dynamics of Earth's mantle. Here, we use a high-dimensional neuronetwork potential and machine learning algorithm to investigate the weight percent water incorporation in stishovite, a main constituent of the subducted oceanic crust. We found that stishovite and water prefer forming medium- to long-range ordered superstructures, featuring one-dimensional (1D) water channels. Synthesizing single crystals of hydrous stishovite, we verified the ordering of OH- groups in the water channels through optical and nuclear magnetic resonance spectroscopy and found an average H-H distance of 2.05(3) A, confirming simulation results. Upon heating, H atoms were predicted to behave fluid-like inside the channels, leading to an exotic 1D superionic state. Water-bearing stishovite could feature high ionic mobility and strong electrical anisotropy, manifesting as electrical heterogeneity in Earth's mantle. |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001062123500014 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74831]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Zhu, Shengcai; Hu, Qingyang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Ctr High Pressure Sci & Technol Adv Res HPSTAR, Beijing 100193, Peoples R China 4.Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat,Key L, Shanghai 200433, Peoples R China 5.Sun Yat Sen Univ, Sch Mat, Shenzhen Campus, Shenzhen 518107, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Junwei,Lin, Yanhao,Meier, Thomas,et al. Silica-water superstructure and one-dimensional superionic conduit in Earth's mantle[J]. SCIENCE ADVANCES,2023,9(35):11. |
| APA | Li, Junwei.,Lin, Yanhao.,Meier, Thomas.,Liu, Zhipan.,Yang, Wei.,...&Hu, Qingyang.(2023).Silica-water superstructure and one-dimensional superionic conduit in Earth's mantle.SCIENCE ADVANCES,9(35),11. |
| MLA | Li, Junwei,et al."Silica-water superstructure and one-dimensional superionic conduit in Earth's mantle".SCIENCE ADVANCES 9.35(2023):11. |
入库方式： OAI收割
来源：广州地球化学研究所
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