Expanded Fluid Alkali Metals.
نویسندگان
چکیده
منابع مشابه
Quantum molecular dynamics simulations for expanded fluid alkali metals
The physical properties of fluid alkali metals and mercury have been studied intensively both theoretically [1] and experimentally [2, 3, 4]. The most interesting feature in fluid metals compared with LennardJones systems is the density dependence of the interaction between the particles. This leads to a strong state dependence of the thermodynamic properties and to a metal-to-nonmetal transiti...
متن کاملThe Structure Factor of Expanded Liquid Alkali Metals at the Long-Wavelength Limit
One of the important properties characterizing a liquid is its static structure factor S(q), which is a measure of particle correlations in the reciprocal space. Apart from that, the main features of S(q) are determined by the effective pairwise potential (r). Evans and Schirmacher [1] showed that the oscilla tory part of <£(/•) has an important effect on the structure factor at the long w...
متن کاملSuperconductivity in the alkali metals
At ambient pressure there are 29 elemental superconductors in the periodic table, none of which is an alkali metal. The first alkali metal to become superconducting under high pressure is Cs followed years later by Li. Alkali metals are believed to be exemplary free-electron systems. The fact that an alkali metal becomes superconducting at all is surprising and is a result of the fact that unde...
متن کاملAre light alkali metals still metals under high pressure ?
The extended Hubbard Hamiltonian on a bcc lattice is studied at half-filling and for a finite hopping between next-nearest-neighbours, in mean-field approximation. An ionic insulating broken-symmetry phase is predicted for any hydrogenoid bcc solid in the density range 1.0 < r s < 2.6. The occurrence of an ionic phase would explain the failure to achieve hydrogen metallization at high pressures...
متن کاملTowards first-principles understanding of the metal-insulator transition in fluid alkali metals.
By treating the electron-ion interaction as a perturbation in the first-principles Hamiltonian, we have calculated the density response functions of a fluid alkali metal to find an interesting charge instability due to anomalous electronic density fluctuations occurring at some finite wavevector Q in a dilute fluid phase above the liquid-gas critical point. Since |Q| is smaller than the diamete...
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ژورنال
عنوان ژورنال: THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY
سال: 1994
ISSN: 0917-639X,1348-1940
DOI: 10.4131/jshpreview.3.163