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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2002, Volume 76, Issue 5, Pages 377–379
(Mi jetpl2919)
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This article is cited in 4 scientific papers (total in 4 papers)
CONDENSED MATTER
Hydrogen tunneling modes in $\alpha$-Mn suppressed by elastic stresses
V. E. Antonova, V. P. Glazkovb, D. P. Kozlenkoc, B. N. Savenkoc, V. A. Somenkovb, V. K. Fedotova a Institute of Solid State Physics, Russian Academy of Sciences
b Russian Research Centre "Kurchatov Institute", Moscow
c Joint Institute for Nuclear Research, Laboratory of Neutron Physics
Abstract:
Behavior of the tunneling mode of hydrogen in MnH$_{0.04}$ and MnH$_{0.07}$ under high pressures in sapphire anvils was studied by the method of incoherent inelastic neutron scattering (INS). It is established that the INS peak corresponding to the hydrogen tunneling in a double-well potential disappears at a pressure of 0.8 GPa in a quasi-hydrostatic regime, while being retained without visible changes under pure hydrostatic conditions. An analogous, albeit weaker, suppression of the tunneling mode takes place upon grinding of a freshly prepared sample. The effect of suppression of the hydrogen tunneling modes by applied inhomogeneous elastic stresses is explained by a shift of the energy levels in the adjacent wells caused by the static displacements.
Received: 06.08.2002
Citation:
V. E. Antonov, V. P. Glazkov, D. P. Kozlenko, B. N. Savenko, V. A. Somenkov, V. K. Fedotov, “Hydrogen tunneling modes in $\alpha$-Mn suppressed by elastic stresses”, Pis'ma v Zh. Èksper. Teoret. Fiz., 76:5 (2002), 377–379; JETP Letters, 76:5 (2002), 318–320
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https://www.mathnet.ru/eng/jetpl2919 https://www.mathnet.ru/eng/jetpl/v76/i5/p377
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Abstract page: | 139 | Full-text PDF : | 46 | References: | 30 |
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