Time-correlated soliton tunneling in charge and spin density waves |
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Authors: | Miller Ordonez Prodan |
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Institution: | Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204-5506, USA. |
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Abstract: | We consider a model in which an electric field induces quantum nucleation of kink-antikink pairs in a pinned charge or spin density wave. Pair nucleation events, prevented by Coulomb blockade below a pair creation threshold, become correlated in time above threshold. The model provides a natural explanation for the observed (i) small density wave polarization below threshold in NbSe (3), (ii) narrow band noise, (iii) coherent oscillations, and (iv) mode-locking at high drift frequencies. |
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