Abstract
Recently, it has been found experimentally that one-dimensional organic conductors undergo a Peierls transition below a transition temperature ${T}_{c}$. We calculate for temperatures below ${T}_{c}$ the tunneling current between two Peierls systems with energy gaps ${\ensuremath{\Delta}}_{1}$, ${\ensuremath{\Delta}}_{2}$, respectively, which are coupled by a thin insulating barrier. Deviations from the single-particle tunneling characteristics due to coherence effects are found, which show up in a reduction of the single-particle current flow; especially the jump in the current-versus-voltage curve at $eV={\ensuremath{\Delta}}_{1}+{\ensuremath{\Delta}}_{2}$, which vanishes. Furthermore, results for $\frac{\mathrm{dI}}{\mathrm{dV}}$ at $T=0$ and $T\ensuremath{\ne}0$ are given and discussed with respect to possible experiments.
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