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تسجيل مستخدم جديدTowards first-principles understanding of the metal-insulator transition in fluid alkali metals
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By treating the electron-ion interaction as 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 wave vector ${bi Q}$ in a dilute fluid phase above the liquid-gas critical point. Since $|{bi Q}|$ is smaller than the diameter of the Fermi surface, this instability necessarily impedes the electric conduction, implying its close relevance to the metal-insulator transition in fluid alkali metals.
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