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A Discrete Version of the Inverse Scattering Problem and the J-matrix Method
The problem of the Hamiltonian matrix in the oscillator and Laguerre basis
construction from the S-matrix is treated in the context of the algebraic
analogue of the Marchenko method.Comment: 11 pages. The Laguerre basis case is adde
Photoconduction and photocontrolled collective effects in the Peierls conductor TaS
Light illumination of thin crystals of CDW conductor TaS is found to
result in dramatic changes of both linear () and nonlinear conduction. The
increase of is accompanied by suppression of the collective conduction,
growth of the threshold field , and appearance of the switching and
hysteretic behavior in the nonlinear conduction. The effects in the nonlinear
conduction are associated with increase of CDW elasticity due to illumination
that leads in particular to appearance of a relation
expected for the one-dimensional pinning.Comment: RevTeX4, 4 pages, 4 postscript figures. Revised manuscript, new
title, new Fig. 1, text corrections. Journal reference adde
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