Quantum Tunneling of Water in Beryl: A New State of the Water Molecule

被引：96

作者：

Kolesnikov, Alexander I. ^{[1
]}

Reiter, George F. ^{[2
]}

Choudhury, Narayani ^{[3
,4
]}

Prisk, Timothy R. ^{[5
]}

Mamontov, Eugene ^{[1
]}

Podlesnyak, Andrey ^{[6
]}

Ehlers, George ^{[6
]}

Seel, Andrew G. ^{[7
,8
]}

Wesolowski, David J. ^{[5
]}

Anovitz, Lawrence M. ^{[5
]}

机构：

[1] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA

[2] Univ Houston, Dept Phys, Houston, TX 77204 USA

[3] Lake Washington Inst Technol, Div Math & Sci, Kirkland, WA 98034 USA

[4] Univ Washington, Sch Sci Technol Engn & Math, Bothell, WA 98011 USA

[5] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

[6] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA

[7] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[8] Univ Oxford, Dept Inorgan Chem, S Parks Rd, Oxford OX1 3QR, England

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 16期

关键词：

INELASTIC NEUTRON-SCATTERING; ALKALI-POOR BERYL; DYNAMICS; VISUALIZATION; SPECTROSCOPY; INSIGHTS; H2O; ICE;

D O I：

10.1103/PhysRevLett.116.167802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using neutron scattering and ab initio simulations, we document the discovery of a new "quantum tunneling state" of the water molecule confined in 5 angstrom channels in the mineral beryl, characterized by extended proton and electron delocalization. We observed a number of peaks in the inelastic neutron scattering spectra that were uniquely assigned to water quantum tunneling. In addition, the water proton momentum distribution was measured with deep inelastic neutron scattering, which directly revealed coherent delocalization of the protons in the ground state.

引用

页数：6

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