Static and Dynamical Elastic Constants of Simple Metals

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概要

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• The compressibility problem of Brovman and Kagan is discussed and examined numerically. The issue of the problem is that the two methods of the calculation of the elastic constants in terms of the second order perturbation based on the same pseudopotential do not give the identical result. One is the method of the static homogeneous deformation. The other is the dynamical long-wave phonon method within the two body central potential approximation. Although the conventional dynamical method, which adopts the zero pressure from the static method, yields the required violation of the Cauchy relation, the differencce between the elastic constants obtained from the two methods still persists. The compressibility problem is shown to be important for alkali metals and significant for A1 and Pb.

• 社団法人日本物理学会の論文
• 1974-05-15

著者

• Soma Toshinobu

  Department Of Applied Physics And Mathematics Mining College Akita University

• Soma Toshinobu

  Department of Applied Physics and Mathematics Mining College, Akita University

関連論文

• Calculation of the Migration Energy of the Interstitial in Si and Ge
• Perturbation Theory of Covalent Crystals. I. : Calculation of Cohesive Energy and Compressibility
• Thermal Expansion Coefficient of Si and Ge
• Static and Dynamical Elastic Constants of Simple Metals
• Note on the Valence Force Model for the Lattice Vibration
• Covalent Bond Correction to the Crystal Energy of Covalent Semiconductors
• Perturbation Theory of Covalent Crystals. : II. Lattice Vibration Spectra in Si and Ge
• Perturbation Theory of Covalent Crystals. : III. Calculation of Formation and Migration Energies of a Vacancy in Si and Ge

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