Microscopic formulation of a lattice-defect model
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Data
1979Autor
Tipo
Abstract
A microscopic construction method of lattice defects which can be represented by dislocation configurations in simple-cubic lattices and for interaction by central forces is given. In contrast to standard theories, where dislocations are introduced via topological operations (Burgers circuit), the author starts from a microscopic ad hoc Hamiltonian which. is suitable only for central-force interacting systems. The various sectors of this microscopic Hamiltonian are associated with dislocation c ...
A microscopic construction method of lattice defects which can be represented by dislocation configurations in simple-cubic lattices and for interaction by central forces is given. In contrast to standard theories, where dislocations are introduced via topological operations (Burgers circuit), the author starts from a microscopic ad hoc Hamiltonian which. is suitable only for central-force interacting systems. The various sectors of this microscopic Hamiltonian are associated with dislocation configurations. A detailed discussion of the stability and symmetry properties of the microscopié Hamiltonian is given. Possible extensions of the theory to non-central-force interacting systems are pointed out. ...
Contido em
Physical review. A. General physics. Vol. 20, no. 6 (Dec. 1979), p. 2521-2532
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Estrangeiro
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Artigos de Periódicos (39565)Ciências Exatas e da Terra (6036)
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