Statistical Mechanical Theory of the Facet Edge of a Crystal
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概要
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The facet edge of the crystal is investigated theoretically on the basis of the TerraceStep-Kink (TSK) model. The statistical mechanics of this model is formulated interms of the lattice Fermion approach. The analysis leads always to the PokrovskyTalapov-Gruber-Mullins transition. At the facet edge, the facet connects with theneighboring curved surface without discontinuity of the slope. In such model the Rat-tice underlying the surface is assumed to be rigid without any deformation caused byemergence of the steps. We extend the TSK model to a more general model includingrelaxation of the lattice bonds caused by the steps. The lattice deformation increasesthe elastic energy but can decrease the step creation energy. We show that the extended model leads always to a sharp edge; there is a discontinuity of the slope at thefacet edge.
- 社団法人日本物理学会の論文
- 1987-02-15
著者
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IZUYAMA Takeo
Institute of Physics,College of Arts and Science,University of Tokyo
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Izuyama T
Univ. Tokyo Tokyo
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Izuyama Takeo
Institute Of Physics College Of Aris And Sciences University Of Tokyo
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YAMAMOTO Takao
Institute of Physics,College of Arts and Sciences,University of Tokyo
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Yamamoto Takao
Institute Of Physics College Of Arts And Sciences University Of Tokyo
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