Abstract
The conductivity fluctuations giving noise in bismuth were found to be extremely nonscalar, with local instantaneous anisotropy in between that of dyads and of traceless tensors. This result requires a symmetry-breaking noise-generating mechanism. Temperature dependence and detailed spectral data show that the kinetics are thermally activated and that the net noise magnitude in thick films is a decreasing function of temperature. A crude model accounting for these results is presented.
- Received 21 June 1983
DOI:https://doi.org/10.1103/PhysRevLett.51.1476
©1983 American Physical Society