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Li C. High-pressure structures of solid hydrogen: Insights from ab initio molecular dynamics simulations. J Chem Phys 2024; 160:144302. [PMID: 38587224 DOI: 10.1063/5.0198080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/19/2024] [Indexed: 04/09/2024] Open
Abstract
Understanding the structural behavior of solid hydrogen under high pressures is crucial for uncovering its unique properties and potential applications. In this study, starting from the phase I of solid hydrogen-free-rotator hcp structure, we conduct extensive ab initio molecular dynamics calculations to simulate the cooling, heating, and equilibrium processes within a pressure range of 80-260 GPa. Without relying on any structure previously predicted, we identify the high-pressure phase structures of solid hydrogen as P21/c for phase II, P6522 for phase III, and BG1BG2BG3 six-layer structure for phase IV, which are different from those proposed previously using the structure-search method. The reasonability of these structures are validated by Raman spectra and x-ray diffraction patterns by comparison with the experimental results. Our results actually show pronounced changes in the c/a ratio between phases I, III, and IV, which hold no brief for the experimental interpretation of an isostructural hcp transformations for phases I-III-IV.
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Affiliation(s)
- Cong Li
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China and Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
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2
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Affiliation(s)
- Wei Fang
- School of Physics and Collaborative Innovation Centre of Quantum Matter, Peking University, Beijing, People's Republic of China
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, London, UK
- Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland
| | - Ji Chen
- Department of Electronic Structure Theory, Max Plank Institute for Solid State Research, Stuttgart, Germany
| | - Yexin Feng
- School of Physics and Electronics, Hunan University, Changsha, People's Republic of China
| | - Xin-Zheng Li
- School of Physics and Collaborative Innovation Centre of Quantum Matter, Peking University, Beijing, People's Republic of China
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University, Beijing, People's Republic of China
| | - Angelos Michaelides
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, London, UK
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3
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Rillo G, Morales MA, Ceperley DM, Pierleoni C. Coupled electron-ion Monte Carlo simulation of hydrogen molecular crystals. J Chem Phys 2018; 148:102314. [DOI: 10.1063/1.5001387] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Giovanni Rillo
- Department of Physics, Sapienza University of Rome, Rome, Italy
| | - Miguel A. Morales
- Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - David M. Ceperley
- Department of Physics, University of Illinois Urbana-Champaign, Champaign, llinois 61801, USA
| | - Carlo Pierleoni
- Department of Physical and Chemical Sciences, University of L’Aquila, L’Aquila, Italy
- Maison de la Simulation, CEA, CNRS, Univ. Paris-Sud, UVSQ, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
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4
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Zen A, Roch LM, Cox SJ, Hu XL, Sorella S, Alfè D, Michaelides A. Toward Accurate Adsorption Energetics on Clay Surfaces. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2016; 120:26402-26413. [PMID: 27917256 PMCID: PMC5126707 DOI: 10.1021/acs.jpcc.6b09559] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 10/31/2016] [Indexed: 05/31/2023]
Abstract
Clay minerals are ubiquitous in nature, and the manner in which they interact with their surroundings has important industrial and environmental implications. Consequently, a molecular-level understanding of the adsorption of molecules on clay surfaces is crucial. In this regard computer simulations play an important role, yet the accuracy of widely used empirical force fields (FF) and density functional theory (DFT) exchange-correlation functionals is often unclear in adsorption systems dominated by weak interactions. Herein we present results from quantum Monte Carlo (QMC) for water and methanol adsorption on the prototypical clay kaolinite. To the best of our knowledge, this is the first time QMC has been used to investigate adsorption at a complex, natural surface such as a clay. As well as being valuable in their own right, the QMC benchmarks obtained provide reference data against which the performance of cheaper DFT methods can be tested. Indeed using various DFT exchange-correlation functionals yields a very broad range of adsorption energies, and it is unclear a priori which evaluation is better. QMC reveals that in the systems considered here it is essential to account for van der Waals (vdW) dispersion forces since this alters both the absolute and relative adsorption energies of water and methanol. We show, via FF simulations, that incorrect relative energies can lead to significant changes in the interfacial densities of water and methanol solutions at the kaolinite interface. Despite the clear improvements offered by the vdW-corrected and the vdW-inclusive functionals, absolute adsorption energies are often overestimated, suggesting that the treatment of vdW forces in DFT is not yet a solved problem.
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Affiliation(s)
- Andrea Zen
- Thomas
Young Centre and London Centre for Nanotechnology, 17−19 Gordon Street, London WC1H 0AH, United
Kingdom
- Department
of Physics and Astronomy, University College
London, Gower Street, London WC1E 6BT, United Kingdom
| | - Loïc M. Roch
- Thomas
Young Centre and London Centre for Nanotechnology, 17−19 Gordon Street, London WC1H 0AH, United
Kingdom
- Department
of Physics and Astronomy, University College
London, Gower Street, London WC1E 6BT, United Kingdom
| | - Stephen J. Cox
- Thomas
Young Centre and London Centre for Nanotechnology, 17−19 Gordon Street, London WC1H 0AH, United
Kingdom
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Xiao Liang Hu
- Thomas
Young Centre and London Centre for Nanotechnology, 17−19 Gordon Street, London WC1H 0AH, United
Kingdom
- Department
of Physics and Astronomy, University College
London, Gower Street, London WC1E 6BT, United Kingdom
| | - Sandro Sorella
- SISSA−International
School for Advanced Studies, Via Bonomea 26, 34136 Trieste, Italy
- INFM
Democritos National Simulation Center, 34151 Trieste, Italy
| | - Dario Alfè
- Thomas
Young Centre and London Centre for Nanotechnology, 17−19 Gordon Street, London WC1H 0AH, United
Kingdom
- Department
of Earth Sciences, University College London, Gower Street, London WC1E 6BT, United
Kingdom
| | - Angelos Michaelides
- Thomas
Young Centre and London Centre for Nanotechnology, 17−19 Gordon Street, London WC1H 0AH, United
Kingdom
- Department
of Physics and Astronomy, University College
London, Gower Street, London WC1E 6BT, United Kingdom
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5
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Affiliation(s)
- Matúš Dubecký
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký University Olomouc, tř.
17 listopadu 12, 771 46 Olomouc, Czech Republic
| | - Lubos Mitas
- Department
of Physics and CHiPS, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Petr Jurečka
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký University Olomouc, tř.
17 listopadu 12, 771 46 Olomouc, Czech Republic
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Abstract
Interest in molecular crystals has grown thanks to their relevance to pharmaceuticals, organic semiconductor materials, foods, and many other applications. Electronic structure methods have become an increasingly important tool for modeling molecular crystals and polymorphism. This article reviews electronic structure techniques used to model molecular crystals, including periodic density functional theory, periodic second-order Møller-Plesset perturbation theory, fragment-based electronic structure methods, and diffusion Monte Carlo. It also discusses the use of these models for predicting a variety of crystal properties that are relevant to the study of polymorphism, including lattice energies, structures, crystal structure prediction, polymorphism, phase diagrams, vibrational spectroscopies, and nuclear magnetic resonance spectroscopy. Finally, tools for analyzing crystal structures and intermolecular interactions are briefly discussed.
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Affiliation(s)
- Gregory J O Beran
- Department of Chemistry, University of California , Riverside, California 92521, United States
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Sinitskiy AV, Voth GA. A reductionist perspective on quantum statistical mechanics: Coarse-graining of path integrals. J Chem Phys 2015; 143:094104. [DOI: 10.1063/1.4929790] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Anton V. Sinitskiy
- Department of Chemistry, James Franck Institute, Institute for Biophysical Dynamics, and Computation Institute, The University of Chicago, 5735 S. Ellis Ave., Chicago, Illinois 60637, USA
| | - Gregory A. Voth
- Department of Chemistry, James Franck Institute, Institute for Biophysical Dynamics, and Computation Institute, The University of Chicago, 5735 S. Ellis Ave., Chicago, Illinois 60637, USA
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Cui W, Shi J, Liu H, Yao Y, Wang H, Iitaka T, Ma Y. Hydrogen segregation and its roles in structural stability and metallization: silane under pressure. Sci Rep 2015; 5:13039. [PMID: 26266340 PMCID: PMC4533316 DOI: 10.1038/srep13039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 07/16/2015] [Indexed: 11/09/2022] Open
Abstract
We present results from first-principles calculations on silane (SiH4) under pressure. We find that a three dimensional P-3 structure becomes the most stable phase above 241 GPa. A prominent structural feature, which separates the P-3 structure from previously observed/predicted SiH4 structures, is that a fraction of hydrogen leaves the Si-H bonding environment and forms segregated H2 units. The H2 units are sparsely populated in the system and intercalated with a polymeric Si-H framework. Calculations of enthalpy of formation suggest that the P-3 structure is against the decomposition into Si-H binaries and/or the elemental crystals. Structural stability of the P-3 structure is attributed to the electron-deficient multicenter Si-H-Si interactions when neighboring silicon atoms are linked together through a common hydrogen atom. Within the multicenter bonds, electrons are delocalized and this leads to a metallic state, possibly also a superconducting state, for SiH4. An interesting outcome of the present study is that the enthalpy sum of SiH4 (P-3 structure) and Si (fcc structure) appears to be lower than the enthalpy of disilane (Si2H6) between 200 and 300 GPa (for all previously predicted crystalline forms of Si2H6), which calls for a revisit of the stability of Si2H6 under high pressure.
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Affiliation(s)
- Wenwen Cui
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Jingming Shi
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Hanyu Liu
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5E2, Canada
| | - Yansun Yao
- 1] Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5E2, Canada [2] Canadian Light Source, Saskatoon, Saskatchewan, S7N 0×4, Canada
| | - Hui Wang
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Toshiaki Iitaka
- Computational Astrophysics Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yanming Ma
- 1] State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China [2] Beijing Computational Science Research Center, Beijing 10084, China
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Feng Y, Chen J, Alfè D, Li XZ, Wang E. Nuclear quantum effects on the high pressure melting of dense lithium. J Chem Phys 2015; 142:064506. [DOI: 10.1063/1.4907752] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Yexin Feng
- International Center for Quantum Materials and School of Physics, Peking University, Beijing 100871, People’s Republic of China
| | - Ji Chen
- International Center for Quantum Materials and School of Physics, Peking University, Beijing 100871, People’s Republic of China
| | - Dario Alfè
- London Centre for Nanotechnology, UCL, London WC1H 0AH, United Kingdom; Department of Physics and Astronomy, University College London, London WC1E6BT, United Kingdom; and Department of Earth Sciences, University College London, London WC1E6BT, United Kingdom
| | - Xin-Zheng Li
- International Center for Quantum Materials and School of Physics, Peking University, Beijing 100871, People’s Republic of China
- Collaborative Innovation Center of Quantum Matter, Beijing 100871, People’s Republic of China
| | - Enge Wang
- International Center for Quantum Materials and School of Physics, Peking University, Beijing 100871, People’s Republic of China
- Collaborative Innovation Center of Quantum Matter, Beijing 100871, People’s Republic of China
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10
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Zurek E, Grochala W. Predicting crystal structures and properties of matter under extreme conditions via quantum mechanics: the pressure is on. Phys Chem Chem Phys 2015; 17:2917-34. [DOI: 10.1039/c4cp04445b] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of quantum mechanical calculations in understanding and predicting the behavior of matter at extreme pressures is discussed in this feature contribution.
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Affiliation(s)
- Eva Zurek
- Department of Chemistry
- State University of New York at Buffalo
- Buffalo
- USA
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