Energy band structure of beryllium and magnesium

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Abstract
The detailed energy band structures of hexagonal beryllium and magnesium have been computed by the composite-wave variational method in conjunction with the quantum defect method. From these energy band data, the density of states and Fermi surface of both these metals have been worked out and compared with the experimental and theoretical results of other workers. The results show a marked deviation of the energy bands of Be from the free electron behaviour, that for Mg being small. The Fermi surface of Be consists of a monster and two identical cigars, while that of Mg, following more or less the free electron nature, consists of several pieces in the form of a monster, cigars, lens, pockets and butterfly. These are found to agree favourably with experimental results.

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