Abstract
The influence of shot noise due to depinning fluctuations in a moving charge density wave (CDW) domain on ac induced steps in the current voltage curve (CVC) is investigated theoretically. The transport model used is that of an overdamped particle in a sinusoidal pinning potential. In spite of overdamping the proposed current noise produces a threshold hysteresis in the CVC. It also tends to suppress higher order current steps. The total broadband noise power under pure dc excitation and the effects of harmonic mixing due to two strong ac signals at frequencies ω and 2ω are also evaluated.
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Wonneberger, W., Breymayer, H.J. Broadband current noise and ac induced current steps by a moving charge density wave domain. Z. Physik B - Condensed Matter 56, 241–246 (1984). https://doi.org/10.1007/BF01304177
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DOI: https://doi.org/10.1007/BF01304177