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Depondt P, Huppert S, Finocchi F. The quantum taste of hydrogen. EPJ WEB OF CONFERENCES 2022. [DOI: 10.1051/epjconf/202226301014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Electronic properties of materials are dominated by quantum effects, but nuclei, being much heavier, are usually treated as classical particles. This approximation, although tremendously convenient, is not always valid, even in close to ambient pressure and temperature conditions, especially when light nuclei such as hydrogen are involved. Zero point energy and proton tunneling can be relevant. Isotopic effects, obtained by replacing hydrogen with deuterium, are observed experimentally and are a clear indication of Nuclear Quantum Effects (NQE) since mean values obtained through classical statistical physics do not depend on mass. Introducing NQEs into simulations at an acceptable computational cost raises fundamental questions and yields subtle and unexpected results.
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Tschauner O, Huang S, Greenberg E, Prakapenka VB, Ma C, Rossman GR, Shen AH, Zhang D, Newville M, Lanzirotti A, Tait K. Ice-VII inclusions in diamonds: Evidence for aqueous fluid in Earth’s deep mantle. Science 2018; 359:1136-1139. [DOI: 10.1126/science.aao3030] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 01/19/2018] [Indexed: 11/02/2022]
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Zha CS, Tse JS, Bassett WA. New Raman measurements for H 2O ice VII in the range of 300 cm -1 to 4000 cm -1 at pressures up to 120 GPa. J Chem Phys 2016; 145:124315. [PMID: 27782667 DOI: 10.1063/1.4963320] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Raman spectroscopic measurements for H2O ice VII have been conducted to 120 GPa at 300 K in the spectroscopic range of 300-4000 cm-1. Both moissanite and diamond anvils were used for the experiments. This overcomes the problems of overlapping spectra between the diamond anvil and sample, which had prevented the observation of the stretching modes at pressures higher than ∼23 GPa in all previous measurements. The new results reveal many bands which have not been reported before. The pressure dependences of the Raman modes show anomalous changes at 13-15, ∼27, ∼44, ∼60, and 90 GPa, implying possible structural changes at these pressures. The new results demonstrate that the predicted symmetric hydrogen bond phase X transition does not occur below 120 GPa.
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Affiliation(s)
- Chang-Sheng Zha
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd. N.W., Washington, DC 20015, USA
| | - John S Tse
- Department of Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B2, Canada
| | - William A Bassett
- Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853, USA
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Zhang X, Huang Y, Sun P, Liu X, Ma Z, Zhou Y, Zhou J, Zheng W, Sun CQ. Ice Regelation: Hydrogen-bond extraordinary recoverability and water quasisolid-phase-boundary dispersivity. Sci Rep 2015; 5:13655. [PMID: 26351109 PMCID: PMC4563362 DOI: 10.1038/srep13655] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 07/31/2015] [Indexed: 02/01/2023] Open
Abstract
Regelation, i.e., ice melts under compression and freezes again when the pressure is relieved, remains puzzling since its discovery in 1850’s by Faraday. Here we show that hydrogen bond (O:H-O) cooperativity and its extraordinary recoverability resolve this anomaly. The H-O bond and the O:H nonbond possesses each a specific heat ηx(T/ΘDx) whose Debye temperature ΘDx is proportional to its characteristic phonon frequency ωx according to Einstein’s relationship. A superposition of the ηx(T/ΘDx) curves for the H-O bond (x = H, ωH ~ 3200 cm−1) and the O:H nonbond (x = L, ωL ~ 200 cm−1, ΘDL = 198 K) yields two intersecting temperatures that define the liquid/quasisolid/solid phase boundaries. Compression shortens the O:H nonbond and stiffens its phonon but does the opposite to the H-O bond through O-O Coulomb repulsion, which closes up the intersection temperatures and hence depress the melting temperature of quasisolid ice. Reproduction of the Tm(P) profile clarifies that the H-O bond energy EH determines the Tm with derivative of EH = 3.97 eV for bulk water and ice. Oxygen atom always finds bonding partners to retain its sp3-orbital hybridization once the O:H breaks, which ensures O:H-O bond recoverability to its original state once the pressure is relieved.
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Affiliation(s)
- Xi Zhang
- Institute of Coordination Bond Metrology and Engineering, College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China.,Institute of Nanosurface Science and Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yongli Huang
- Key Laboratory of Low-dimensional Materials and Application Technology (MOE) and School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Peng Sun
- Institute of Coordination Bond Metrology and Engineering, College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China
| | - Xinjuan Liu
- Institute of Coordination Bond Metrology and Engineering, College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China
| | - Zengsheng Ma
- Key Laboratory of Low-dimensional Materials and Application Technology (MOE) and School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Yichun Zhou
- Key Laboratory of Low-dimensional Materials and Application Technology (MOE) and School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Ji Zhou
- State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Weitao Zheng
- School of Materials Science, Jilin University, Changchun 130012, China
| | - Chang Q Sun
- NOVITAS, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
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Zhang X, Sun P, Yan T, Huang Y, Ma Z, Zou B, Zheng W, Zhou J, Gong Y, Sun CQ. Water's phase diagram: From the notion of thermodynamics to hydrogen-bond cooperativity. PROG SOLID STATE CH 2015. [DOI: 10.1016/j.progsolidstchem.2015.03.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sun YY, Liu FS, Xu LH, Liu QJ, Ma XJ, Cai LC. Vibrational spectrum of condensed H 2O in hydrogen-bonding environment: an ab initiosimulation study. Mol Phys 2015. [DOI: 10.1080/00268976.2014.944237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Finkelstein Y, Moreh R. Proton dynamics in ice VII at high pressures. J Chem Phys 2013; 139:044716. [DOI: 10.1063/1.4816630] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Lu XZ, Zhang Y, Zhao P, Fang SJ. Vibrational Analysis of the Hydrogen-Bond Symmetrization in Ice. J Phys Chem B 2010; 115:71-4. [DOI: 10.1021/jp1074434] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xue Z. Lu
- School of Science, University of Jinan, Jinan 250022, China, and School of Physics and Microelectronics, National Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Ying Zhang
- School of Science, University of Jinan, Jinan 250022, China, and School of Physics and Microelectronics, National Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Peng Zhao
- School of Science, University of Jinan, Jinan 250022, China, and School of Physics and Microelectronics, National Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Shao J. Fang
- School of Science, University of Jinan, Jinan 250022, China, and School of Physics and Microelectronics, National Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Pickard CJ, Needs RJ. Highly compressed ammonia forms an ionic crystal. NATURE MATERIALS 2008; 7:775-9. [PMID: 18724375 DOI: 10.1038/nmat2261] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2008] [Accepted: 07/22/2008] [Indexed: 05/10/2023]
Abstract
Ammonia is an important compound with many uses, such as in the manufacture of fertilizers, explosives and pharmaceuticals. As an archetypal hydrogen-bonded system, the properties of ammonia under pressure are of fundamental interest, and compressed ammonia has a significant role in planetary physics. We predict new high-pressure crystalline phases of ammonia (NH(3)) through a computational search based on first-principles density-functional-theory calculations. Ammonia is known to form hydrogen-bonded solids, but we predict that at higher pressures it will form ammonium amide ionic solids consisting of alternate layers of NH(4)(+) and NH(2)(-) ions. These ionic phases are predicted to be stable over a wide range of pressures readily obtainable in laboratory experiments. The occurrence of ionic phases is rationalized in terms of the relative ease of forming ammonium and amide ions from ammonia molecules, and the volume reduction on doing so. We also predict that the ionic bonding cannot be sustained under extreme compression and that, at pressures beyond the reach of current static-loading experiments, ammonia will return to hydrogen-bonded structures consisting of neutral NH(3) molecules.
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Affiliation(s)
- Chris J Pickard
- Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, UK.
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Klug DD, Tse JS, Liu Z, Hemley RJ. Hydrogen-bond dynamics and Fermi resonance in high-pressure methane filled ice. J Chem Phys 2007; 125:154509. [PMID: 17059274 DOI: 10.1063/1.2357954] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
High-pressure, variable temperature infrared spectroscopy and first-principles calculations on the methane filled ice structure (MH-III) at high pressures are used to investigate the vibrational dynamics related to pressure induced modifications in hydrogen bonding. Infrared spectroscopy of isotopically dilute solutions of H(2)O in D(2)O is employed together with first-principles calculations to characterize proton dynamics with the pressure induced shortening of hydrogen bonds. A Fermi resonance is identified and shown to dominate the infrared spectrum in the pressure region between 10 and 30 GPa. Significant differences in the effects of the Fermi resonance observed between 10 and 300 K arise from the double-well potential energy surface of the hydrogen bond and quantum effects associated with the proton dynamics.
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Affiliation(s)
- D D Klug
- Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa K1A 0R6, Canada.
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Benoit M, Romero AH, Marx D. Reassigning hydrogen-bond centering in dense ice. PHYSICAL REVIEW LETTERS 2002; 89:145501. [PMID: 12366053 DOI: 10.1103/physrevlett.89.145501] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2002] [Indexed: 05/23/2023]
Abstract
Hydrogen bonds in H2O ice change dramatically upon compression. Thereby a hydrogen-bonded molecular crystal, ice VII, is transformed to an atomic crystal, ice X. Car-Parrinello simulations reproduce the features of the x-ray diffraction spectra up to about 170 GPa but allow for analysis in real space. Starting from molecular ice VII with static orientational disorder, dynamical translational disordering occurs first via creation of ionic defects, which results in a systematic violation of the ice rules. As a second step, the transformation to an atomic solid and thus hydrogen-bond centering occurs around 110 GPa at 300 K and no novel phase is found up to at least 170 GPa.
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Affiliation(s)
- Magali Benoit
- Laboratoire des Verres, Université Montpellier II, 34095 Montpellier, France
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Morgenstern K, Nieminen J. Intermolecular bond length of ice on Ag(111). PHYSICAL REVIEW LETTERS 2002; 88:066102. [PMID: 11863826 DOI: 10.1103/physrevlett.88.066102] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2001] [Indexed: 05/23/2023]
Abstract
Water adsorbed in submonolayer coverage on Ag(111) at 70 K forms hydrogen-bonded networks. High resolution images in combination with calculation reveal that single protrusions represent a cyclic water hexamer with the intermolecular bond stretched to the silver lattice constant of 0.29 nm. Scanning tunneling spectroscopy indicates that the bond length within the two-dimensional hydrogen-bonded water layer is shortened. The spectra contain further information about the vibrational modes of water molecules.
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Affiliation(s)
- Karina Morgenstern
- Institut für Experimentalphysik, FB Physik, FU Berlin, Arnimallee 14, D-14195 Berlin, Germany
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Abstract
Recent high-pressure studies reveal a wealth of new information about the behavior of molecular materials subjected to pressures well into the multimegabar range (several hundred gigapascal), corresponding to compressions in excess of an order of magnitude. Under such conditions, bonding patterns established for molecular systems near ambient conditions change dramatically, causing profound effects on numerous physical and chemical properties and leading to the formation of new classes of materials. Representative systems are examined to illustrate key phenomena, including the evolution of structure and bonding with compression; pressure-induced phase transitions and chemical reactions; pressure-tuning of vibrational dynamics, quantum effects, and excited electronic states; and novel states of electronic and magnetic order. Examples are taken from simple elemental molecules (e.g. homonuclear diatomics), simple heteronuclear species, hydrogen-bonded systems (including H2O), simple molecular mixtures, and selected larger, more complex molecules. There are many implications that span the sciences.
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Affiliation(s)
- R J Hemley
- Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, Washington, DC 20015, USA.
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Chang HC, Huang KH, Yeh YL, Lin SH. A high-pressure FT-IR study of the isotope effects on water and high-pressure ices. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)00788-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Cavazzoni C, Chiarotti GL, Scandolo S, Tosatti E, Bernasconi M, Parrinello M. Superionic and metallic states of water and ammonia at giant planet conditions. Science 1999; 283:44-6. [PMID: 9872734 DOI: 10.1126/science.283.5398.44] [Citation(s) in RCA: 387] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The phase diagrams of water and ammonia were determined by constant pressure ab initio molecular dynamic simulations at pressures (30 to 300 gigapascal) and temperatures (300 to 7000 kelvin) of relevance for the middle ice layers of the giant planets Neptune and Uranus. Along the planetary isentrope water and ammonia behave as fully dissociated ionic, electronically insulating fluid phases, which turn metallic at temperatures exceeding 7000 kelvin for water and 5500 kelvin for ammonia. At lower temperatures, the phase diagrams of water and ammonia exhibit a superionic solid phase between the solid and the ionic liquid. These simulations improve our understanding of the properties of the middle ice layers of Neptune and Uranus.
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Affiliation(s)
- C Cavazzoni
- Istituto Nazionale per la Fisica della Materia (INFM) and International School for Advanced Studies (SISSA), Via Beirut 4, I-34014 Trieste, Italy
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Pruzan P, Wolanin E, Gauthier M, Chervin JC, Canny B, Häusermann D, Hanfland M. Raman Scattering and X-ray Diffraction of Ice in the Megabar Range. Occurrence of a Symmetric Disordered Solid above 62 GPa. J Phys Chem B 1997. [DOI: 10.1021/jp963182l] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Aoki K, Yamawaki H, Sakashita M, Fujihisa H. Infrared absorption study of the hydrogen-bond symmetrization in ice to 110 GPa. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:15673-15677. [PMID: 9985631 DOI: 10.1103/physrevb.54.15673] [Citation(s) in RCA: 154] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Goncharov AF, Struzhkin VV, Somayazulu MS, Hemley RJ, Mao HK. Compression of Ice to 210 Gigapascals: Infrared Evidence for a Symmetric Hydrogen-Bonded Phase. Science 1996; 273:218-20. [PMID: 8662500 DOI: 10.1126/science.273.5272.218] [Citation(s) in RCA: 257] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Protonated and deuterated ices (H2O and D2O) compressed to a maximum pressure of 210 gigapascals at 85 to 300 kelvin exhibit a phase transition at 60 gigapascals in H2O ice (70 gigapascals in D2O ice) on the basis of their infrared reflectance spectra determined with synchrotron radiation. The transition is characterized by soft-mode behavior of the nu3 O-H or O-D stretch below the transition, followed by a hardening (positive pressure shift) above it. This behavior is interpreted as the transformation of ice phase VII to a structure with symmetric hydrogen bonds. The spectroscopic features of the phase persisted to the maximum pressures (210 gigapascals) of the measurements, although changes in vibrational mode coupling were observed at 150 to 160 gigapascals.
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Affiliation(s)
- AF Goncharov
- Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington, DC 20015, USA
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