Abstract

A dislocation glide mechanism at low temperatures is proposed. The mechanism is based on the inclusion of dynamic atomic displacements, i.e., those caused by nonadiabatic transitions of atoms in a crystal with a dislocation under action of an external force. The dynamic displacements initiate the instability of a rectilinear dislocation with respect to low-amplitude displacements during atomic vibrations. The instability development leads to the formation of a double kink and the dislocation displacement by one interatomic distance.

中文翻译：

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晶体中的动态原子位移和非热位错滑行

摘要

提出了低温下的位错滑移机理。该机制基于动态原子位移的包含，即那些由外力作用下位错的晶体中原子的非绝热跃迁引起的位移。动态位移引发了原子振动过程中直线位移相对于低振幅位移的不稳定性。不稳定性的发展导致双扭结的形成和位错位移一个原子间距离。