A stochastic model of crystal plasticity
The present state of understanding of problems involving movement of dislocations in real crystals is somewhat reminiscent of that relating to electron transport in metals at about 1925. At that time the shortcomings of the classical “gas-kinetic” theory of Drude and Lorentz, advanced in the first decade of this century, were well understood, but some time had yet to elapse before, in 1928, the use of Fermi-Dirac statistics by Sommerfield, and the introduction of the concept of a periodic lattice-field by Block, removed the difficulties, and facilitated a deeper insight into the process.
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