| Partially Diffusive Helium-Silica Compound under High Pressure |
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| 作者姓名： | 刘聪 王俊杰 邓忻 王晓梦 Chris J.Pickard Ravit Helled 吴忠庆 王慧田 邢定钰 孙建 |
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| 作者单位： | 1. National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University;2. Departament de Física, Universitat Politècnica de Catalunya,Campus Nord B4-B5;3. Laboratory of Seismology and Physics of Earth's Interior, School of Earth and Space Sciences,University of Science and Technology of China;4. Department of Materials Science & Metallurgy, University of Cambridge;5. Advanced Institute for Materials Research, Tohoku University;6. Institute for Computational Science, Center for Theoretical Astrophysics & Cosmology,University of Zurich |
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| 基金项目： | the financial support from the National Natural Science Foundation of China (Grant Nos. 12125404, 11974162, and 11834006)；;the Fundamental Research Funds for the Central Universities； |
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| 摘 要： | Helium is the second most abundant element in the universe, and together with silica, they are important components of giant planets. Exploring the reactivity and state of helium and silica under high pressure is crucial for understanding of the evolution and internal structure of giant planets. Here, using first-principles calculations and crystal structure predictions, we identify four stable phases of a helium-silica compound with seven/eight-coordinated silicon atoms at pressure of 600–4000 ...
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